The record contains 225 assignments of error. Manifestly a seriatim discussion is not desirable. Instead we treat the basic principles which appellants urge in support of their assignments of error.

When the State rested, defendants severally moved for nonsuit which, if allowed, would have the force and effect of ¡a judgment of not guilty. G.S. 15-173. They offered no evidence. The court overruled the motions and defendants severally excepted. The correctness of the rulings on the motions so made is the first question presented.

If the evidence offered, when viewed in the light most favorable to the State, was sufficient for a jury to fairly conclude that any •two defendants were guilty, the motion as to those defendants was properly overruled. S. v. Horner, 248 N.C. 342, 103 S.E. 2d 694; S. v. Block, 245 N.C. 661, 97 S.E. 2d 243; S. v. Simpson, 244 N.C. 325, 93 S.E. 2d 425. If, however, the evidence amounts to no more than suspicion or conjecture, the motion (bo nonsuit should have been allowed. S. v. Glenn, 251 N.C. 156.

The bills charge that defendants “did unlawfully, willfully and feloniously combine, conspire, confederate and plan together to willfully, maliciously and wantonly injure” the property of another. A conspiracy is an agreement by two or more persons to do an unlawful thing or -to do a lawful thing in an unlawful way or by unlawful means. The heart of the conspiracy is the agreement. It is not necessary that tire object sought by the agreement be accomplished. S. v. Hedrick, 236 N.C. 727, 72 S.E. 2d 904; S. v. Parker, 234 N.C. 236, 66 S.E. 2d 907; S. v. Davenport, 227 N.C. 475, 42 S.E. 2d 686; S. v. Andrews, 216 N.C. 574, 6 S.E. 2d 35; S. v. Lippard, 223 N.C. 167, 25 S.E. 2d 594; S. v. Anderson, 208 N.C. 771, 182 S.E. 643; S. v. Whiteside, 204 N.C. 710, 169 S.E. 711.

The refusal to nonsuit requires an examination of the evidence to 'ascertain if there was an 'agreement between defendants or any two of them to maliciously injure the property of Harriet Cotton Mills or Carolina Power & Light Company. The evidence as to *469•the guilt of defendants Martin., Payton, Gore and Auslander is confined to the testimony of witness Aaron. Evidence of guilt of' defendants Walker, Abbott, Pegram, and Jarrell appears in the testimony of the witness Aaron and confessions related by agents of the S. B. I.

The development of the conspiracy, as related by Aaron, can best be treated chronologically. Aaron is a resident of Leaksville, N. C. He knows Auslander, who lives in a hotel in Reidsville but works in Spray. He testified: “During the month of May, 1959, I saw Auslander five or six times. Pie has an office in the Textile Workers Union of America Union Hall in Spray. I think he is 'the manager of the Local and has been, best I recall, eight, nine, ten years. . . I ■had an occasion to see him during the month of May, on or before about the 21st of May, in his office at tire Union Hall, pursuant to some word I got from somebody. I went to> the Union Hall and talked to him during the day. . . We discussed the strike situation in Henderson, and he said that the Henderson strike was affecting all of the unions in the South and said if the strike was not won in Henderson, it would be against all of -the unions in the South.

“We discussed the possibility of going to Henderson to put the mill out of operation. Auslander first mentioned it. Pie wanted to know if I would go to Henderson and bomb the boiler room and stop operation of the mill. . . .1 told him I would do it, would bomb the boiler room, nobody else was present except me and him. We discussed the substation that supplied the mill with power and I toldi him that I knew where it was. . . .He asked me if I could get somebody to help me. I told him I thought I could.

“I left with the understanding I would get somebody else and meet him. . . .1 brought E. C. McBryde from Draper with me to talk with him about the bombing. That conversation was in his office in the daytime. (Present at that time were Auslander, Dave Harris, Auslander’s assistant, McBryde, and Aaron). . .Then we talked of going through with the bombing of the boiler room and the substation that feeds the cotton mills in Henderson. That just about taken care of the conversation at that time. . . .

“I saw Auslander again at 'his office that afternoon and had a conversation with him. . . .

“Auslander told me to go to Henderson and look the situation over. Pie gave me $10.00 for expenses to go down to Henderson and look the boiler room over and the substation. That was in cash.”

The witness contacted a member of the State Highway Patrol and informed the patrolman of his conversation with Auslander. The patrolman put Aaron in touch with a member of State Bureau of In*470vestigation. He related bis conversation with Auislander. Pursuant to an understanding with members of the S. B. I. that he would keep them informed of what transpired, he went to Henderson. He testified: “I came to Henderson on the 2nd of June. . . .When I arrived in Henderson, I called Johnnie Martin from a service station ... .1 ©aw him at his 'home. . . .It was daytime when I saw him. . . . When I reached Martin’s home, I knocked on the door and he came to the door and I told him that Auislander had sent me down there ... .1 said that I was sent to contact him and we went and got in his oar and we discussed w'hy I came .to see him. . . .1 told him I was sent to bomb the boiler room and the power station 'and that he would help me out and I told him of another name. . . .1 showed him the paper I had. . . .Mr. Auslander gave me the paper in -his office at the last meeting with him. . . .He said that be talked to these boyis in Henderson and said that he did not think that Martin would actually do the bombing, hut said that he would help me out in .any other way that he could. . . .When I was talking with Martin on this occasion he asked me first why I had not come when I was supposed to. He asked me why I did not come when I was supposed to the week previous. . . .Martin said that he would be the one to go between me and Walker if we had to get in touch with each other. Then.I went to Warren Walker’s home and saw Walker. . . . We talked of the 'bombing of the boiler room, how to get into -it. . . . I told Walker I was down there to bomb the boiler room and asked him would he help me. He ©aid he would. I told him the boy I was going .to bring with me could not come and I bad to have somebody to help me, and I told him that I understood that they knew all about it and he said they did. . . .1 told him that it had to he so that the Union would not be involved in it. If we got caught, we were on our own and they would not have anything to do with it. . . .

“After talking with Walker at length about the actual bombing and how we would do it, I sat up a meeting to meet him. I told Walker w.e would bomb the boiler room and the substation. . . .He said that he was going to help me bomb the boiler room, the power station, and we talked of all of the things. . Walker 'did not at that time mention the office of the Harriet Cotton Mills. . . .1 next talked to him at the Brookwood Motel on or about the 3rd of June. . . . Lawrence Gore was with him. It was in the nighttime. . .Gore asked me why I didn’t come when I was supposed to and I explained to him why I didn’t come, that I didn’t trust the boy I was bringing with me and I could not bring him and I told him that I would rather come by myself. . . .

“Gore said that he thought that the main office building of the *471South Henderson Mill would be of more importance than the boiler room. He sa-id that they had records that could not be replaced. . . He said he would see some boys that were to- help me do the actual bombing and he said that me and him would not meet again. . . .”

Aaron returned to Rockingham County on 5 June. He testified: “I saw Auslander when I got to Leak-sviile. He asked me why I had not got rid of the main office building. We were discussing dynamite and he had made a -call — he told me that he was going to call South Carolina. . . .He said: T am going to make a call.’ He -saidi about ¡some ‘bones/ as to what kind of ‘-bones/ that is dynamite. He made the call on the telephone. I heard what he said when he made the ¡call. He placed the call to Spartanburg, South Carolina. . .1 beard what he said ¡to him. He said, that he needed, -asked him first did he have any ‘bones’ hid. . . .I-n -response to what the person on the'other end of -the line said, Auslander -said, he had a boy in the office there that would -come down -and get them, get the 'bones.”

Aaron communicated this conversation to ¡the S. B. I. Pursuant to their request, he came to them -office -in Raleigh. He then went to the Brookwoodi Motel -at Roanoke Rapids. This room bad, with Aaron’s -consent, been wired with a tape recorder. Aaron continued: “Warren Walker came t-o my room -alon-e. I talked with -him. . . . -he asked me what I was planning to do ¡and I told 'him that I didn’t know, that ¡as far -as I was concerned that the ‘hones’ would have to c-ome from Henderson, because I could not get -any in Leaksville. . . we talked -about bombing the boiler room, the substation and the setting fire with Molotov Cocktails the main office building at the South Henderson mill.

“A Molotov Cocktail i-s fuel -oil and gasoline mixed in a bottle and' ¡corked up -with a fuse on the outside. When it bursts against something it ignites the gas. I -asked him could he fix them up. He said he could.”

Th-at meeting, according to the witness A-aron, lasted about ¡an hour. Arrangements were then made for a meeting -at the motel the following -night. Aaron continued: “He did meet me the following night at the Brookwo-od Motel, Warren Walker, Pegram, Abbott ¡and Jarrell ¡and myself. . . .When they first got in my presence in -my room, one of them was introduced to me as Mike Jarrell -and Abbott and Pegram said they were the Jones -boys and said that was as much ¡as I would ever know. . . .Wa-l-ke-r told me that these were the boys that he bad told me about previously and said that Pegram ¡and Abbott would bomb the transformers. And Pegram asked me about the price, what he would get out of it. I told him that I didn’t know, but the understanding that I had wa-s that the p-ay-off would come from *472Leaksville, and be said that be bad discussed it with Gore and Gore and him bad come to some agreement. He did not tell me what it was, and Pegram said that if they had paid the price, he could have knocked -that office building out long ago, but that they would not pay the price for it. . . .1 told Jarrell that Pegram was running his mouth too much and Jarrell agreed with me. . . .Walker said he could vouch for Punch referring to Pegram, and the other two boys said that he knew how they operated and said that they were good boys. . . .Walker and I said that we would bomb the boiler room if we could. . .Pegram told me, ‘If you show me exactly where to put it, it will go out,’ referring to the lights. By ‘it’ was meant dynamite. He wanted me to show him where to put the dynamite under the transformers. . . .We talked of the best time to engage in those activities, me and walker, and I asked him was the mill in operation on Saturday and Sunday and hie saidi that — Pegram said that he thought it would be the 'best night to do it. . . .”

Arrangements were made to meet again at the Brookwood Motel on 12 June. Aaron testified that Walker, Abbott, and Pegram came to 'the motel. Pegram did not get out of the car but Walker did and came to his room. Pegram and Abbott left in their car. Walker remained with the witness. Aaron testified that it was arranged that they would meet on the night of the 13th iat the Motor Freight Terminal in Henderson to consummate the conspiracy. Aaron quoted Pegram as saying: “ T will drive my brother’s car’ or T will have my brother’s oar.’ He said that he would have the stuff with him, talking about the dynamite. Pegram himself said that he had the 60% dynamite stuff he would use on the power plant. Walker said he would get out of the car. He did not say whose car he would drive up in but said he would get out of the oar and get in with me. . .”

Special agents and members of the Highway Patrol, pursuant to the information communicated to them by Aaron, were at the Motor Freight Terminal in Henderson on 'the night of the 13th. About 7:50 that night 'an automobile drove up with three persons in it, the defendants Walker, Pegram, and Abbott. They were arrested and interrogated by members of the S. B. I. The tape recordings taken at Aaron’s room in the Brookwood Motel were played to them. Wit-nessess for the State testified Walker and Abbott admitted the agreement to dynamite as related' by Aaron but asserted they had not intended to go through with the plan. They testified Pegram admitted going to Rotaoke Rapids with Walker, Abbott, and Jarrell where they talked with ¡another person; but Pegram refused to make any further statement.

*473The additional evidence on which the State relies to support the verdict of guilty as to defendant Boyd Payton may be thus summarized: Auslander is a staff representative of the Textile Workers Union of America, AFL-CIO. The proposal to dynamite the mill properties and electric system originated with Auslander to prevent the failure of the strike 'by union members, employees of the Ootton Mill. Aaron, soon after he went to Henderson pursuant to his agreement with Auslander, was contacted by defendant Lawrence Gore, likewise a staff representative of the Textile Workers Union of America. Payton was the union agent having charge of the strike at Henderson. Gore was Iris subordinate. It was important that union association should not be established if the plan went awry. Gore was registered at the Vance Hotel in Henderson during the early part of June. He was there on the night of 4 June and' checked out on 5 June. Gore promised the men employed to -assist in dynamiting would meet Aaron at his motel room on the night of 4 June. They failed to appear. Aaron, when they failed to appear, called for Gore at his hotel room in Henderson. A person answered stating that the defendant Payton was talking. Aaron recognized Payton’s voice. This sufficed to take the question of identity to the jury. Everette v. Lumber Co., 250 N.C. 688, 110 S.E. 2d 288.

Supporting Aaron’s testimony were telephone company records showing a long distance call for Gore at the Vance Hotel in Henderson. The call lasted two minutes 25 seconds. It was made at 8:36 p.m. Payton answered the phone in Gore’s room. Aaron continued: “He said this is Boyd Payton, and I said that this is the boy from LeakesviHe at Roanoke Rapids. He said, I know, and I told him that I was broke and -had to go home. My wife thought I was in Richmond and I had to go home that week-end. I told him I was upset because Gore had not met -me that night he was supposed to, Walker was supposed to. He says, don’t say too much. He says the phones are going ¡through a switchboard. He said that Lawrence was out of town but he would contact him that night or the first thing in the morning and get him to get in touch with me and he hung up. That’s all.”

The brief of -defendants, dealing specifically with the Sufficiency of the evidence -as to Payton's guilt, says with respect to the quoted conversation between Payton and Aaron: “The juiy conceivably could infer from this testimony that the defendant, Payton, knew about the alleged conspiracy involving the other defendants.” With this knowledge Payton promised to Lave Gore see Aaron.

The following morning Aaron -had breakfast at a restaurant next to the bus station at Roanoke Rapids. When he returned to the *474motel, Lawrence Gore and Warren Walker were waiting for him. Aaron wias asked: “What was said then and (there?” He testified: “The first thing was said, Mr. Gore said that Boyd had finally got in touch with Charlie. . .he said that Boyd had finally got in touch with Charlie Auslander, Boyd Payton, and said ithat he had got in touch with Gharlie himself the night previous to the meeting we had that morning and said that Auslander wanted me to come home to discuss the situation over further. . . .Gore told me, he said, T thought we had an understanding .that we would not get in touch with each other again,’ and he did not like the idea that I called the hotel. He said he did not like it and said Boyd did not like it, me calling the Vance Hotel and talking to Payton. I told him I called the hotel to talk to him, Gore. And I said I did not ask to talk to Payton and we discussed that. I just explained to him that I did not know that I was going to talk to Payton and I did not ask for Payton, they done it on his own free will. . .He (Gore) said he was moving from Whiteville to Greensboro and he needed every penny he had and said he could give me $20.00. He gave me $20.00. He said, ‘Here’s $20.00,’ and he says, ‘When you get home tell Charlie to send it back to Boyd -and Boyd can give it to me.’ ”

Payton carried a telephone credit card issued to “Boyd E. Payton, Textile Workers Union of America, C. I. O., 110 West 6th Street, Charlotte, N. C.” A representative of the telephone company produced, pursuant to subpoena, records showing charges to the credit card. Among the charges to that card was a telephone call made at Henderson to Auslander ,at his residence in Reidsville. The call was made -at 11:21 p.m. 4 June and lasted eight minutes. Other calls to Auslander in May and June were charged to Payton’s credit card.

Aaron returned bo Leaksville on the morning of 5 June. He testified: “I saw Auslander when I got to Leaksville. He was standing outside. I was waiting for him when he came up. I saw him the same day and he drove up and wp walked over behind my car and we talked, Auslander and me. As to what he said then, what was the first thing, well, he got mad because I had called Payton. He told me I was wrong by calling him land getting him involved in 'anything, getting Payton involved. He said I should not have talked to him. I explained to him that I did not call him and he talked to me voluntarily. . .” This was the time Auslander telephoned Spartanburg to secure dynamite.

The evidence is, we think, sufficient -to show Payton’s participation in the proposed plan to dynamite the properties of the Cotton Mill and the Power Company, conceived for the purpose of pro-*475muting Payton's job of keeping the mills from operating and' is sufficient, if accepted by % jury as true, to establish the guilt of all of the defendants.

Defendants argue there can be no conviction because of Aaron’s pretended participation. Their position is that the evidence establishes that Aaron never had any intent to consummate his agreement with Auslander; that agreement constitutes the basis on which the conspiracy must rest, and that since there was no consent to the conspiracy by Aaron, the agreement by the others was a nullity and constituted no crime.

In support of their position they rely on King v. State, 104 S 2d 730. There the defendant King and another were 'charged with having entered into a conspiracy with a law enforcement officer to violate the gambling laws of Florida. They were convicted; judgment was originally affirmed. Petition to rehear was filed, andi by a divided Court it was held that the conviction could not be sustained where one of the parties to the conspiracy was a law enforcement officer who had no intent to violate the law. The Court said: “But Muscovitz, in the circumstances here, is not criminally liable as a co-conspirator (.citations omitted); nor can it be seriously contended that a government agent can be prosecuted for a violation of a criminal statute committed in the performance of his duty as such agent. We are cognizant of the fact that la punishable conspiracy may exist whether or not the crime intended to be accomplished by it was committed. But it is equally well settled that where one of two persons who conspire to do an illegal act is an officer acting in the discharge of his duty, the other person cannot be convicted of a charge of conspiracy.”

If the Supreme Court of Florida was speaking with reference to a conspiracy limited to a governmental agent and one other person, the facts differ from tlie facts in this case. If the Supreme Court of Florida intended to hold that a conspiracy among several, one of whom was a governmental agent, without any intent to participate but mei’ely seeking information with respect to the proposed criminal act, we disagree with the conclusion reached. The mere fact that an agent of the law pretends to be acting in conjunction with several others in a criminal conspiracy does not absolve those indicted and relieve them of guilt. We so held in S. v. Caldwell, 249 N.C. 56, 105 S.E. 2d 189.

The cases cited by .the Supreme Court of Florida do not, in our opinion, support the conclusion reached in the King case.

In De Mayo v. United States, 32 F. 2d 472, there was a charge of criminal conspiracy and as here a government agent was, or pre*476tended to be, a party to the conspiracy. The indictment charged several as participants in the conspiracy. The Court said: “It developed in the testimony that Kelsey, together with one Kennedy, was -acting as the representative and agent of the prohibition officers of the United States; that he was in effect such lan officer and did what he did for the purpose of detecting the conspirators and of bringing them to trial and -conviction. It is urged, therefore, by appellant that the indictment, if not in fact invalid because of the incorporation -of Kelsey as conspirator, failed of -support by the evidence in that -a government officer, who is -not in fact a co-conspirator, -but who acts .simply for the purpose of detecting crime, cannot bind bis codefendants; that his acts- are not imputabl-e to them because there is not community of purpose. . . .(I)t seern-s clear -that if, in addition -to the .parties first named, Kelsey, though not a government -officer, had been included -as .a defendant, and it had developed that Kel-sey was not a party to- the conspiracy, it could not be claimed that the conspiracy -charged would fail on that account as to the others. We take it that Kelsey’s in-competency to become a conspirator under the facts existing effects a result no different from that which w-ould follow if he were otherwise found not to- be a party to the unlawful agreement.”

O’Brien v. United States, 51 F. 2d 674, involved a conspiracy to violate the prohibition law-s. The ’court said: “That there was a conspiracy to violate the prohibition law, there can be no doubt. The conspiracy -was -conceived by the three prohibition -agents, who enlisted the services of a de-coy, Lyle, to more effectually accomplish th-ei-r object. . . .It might be urged, perhaps, that the object of the conspiracy was to entrap certain suspected offenders. Nevertheless such entrapment was to -be accomplished through the violation -of the Prohibition Act. As a -conspiracy may have several objects, if follows that, if one of its objects he the violation o-f a federal law, it falls within the condemnation of the statutes.”

In Weathered v. State, 81 S.W. 2d 91 (Texas), the bill charged Weathered, Vick Bradley, and Edgar Hammonds with a conspiracy to -break and enter -a house. The count -reviewed the evidence as to B-ra-dley’s intent to participate in the -conspiracy -and 'his part as an informer. Following 'the review of the evidence, the Court said: “From the foregoing testimony it is obvious that Vick Bradley did not intend to commit burglary or aid in the commission. thereof. His participation -in the alleged -conspiracy was not -sincere; it was simulated. Hence, there was no union or meeting of the minds on the part of Bradley with the other parties so -as to constitute him a coconspirator. His acts, conduct, and -presence was to deceive *477and mislead bis alleged coconspirators. His mind did not concur and unite with the mindis of his alleged coconspirators in a criminal intent to commit the alleged offense. . . . But -this would not relieve the appellant from being prosecuted and convicted of said offense provided the testimony showed that appellant and Hammonds had entered into a 'conspiracy to commit the offense. . .”

Applying the definition heretofore given of a conspiracy, this Court has held that one cannot be convicted unless at least two are bo charged. S. v. Wrenn, 198 N.C. 260, 151 S.E. 261. But when, as here, several are charged and participate in the conspiracy, conviction can be had; and this is true even though some of the alleged conspirators are unknown. Rogers v. U. S., 340 U.S. 367, 95 L. ed. 344, 19 A.L.R. 2d 378.

Defendants next challenge the right 'to put them on trial. The bills of indictment were returned at the June Term. Before pleading to the charge contained in bill 3508, they filed what they denominated a plea in abatement. By this .p,lea .they assert (1) Vance County was not the proper venue, (2) the bill was based solely on incompetent evidence, which fact they propose to establish by testimony of members of the grand jury, and (3) the bill was not based on any evidence given in connection therewith. Such testimony as was heard related to a prior bill, and they propose to establish this fact by testimony from members of the grand jury.

The evidence taken at the trial establishes contact between Martin and Walker and activities between them in Vance County. It is also fair to infer that Walker, Abbott, and Pegram came to the Motor Freight Terminal in Henderson on the night of 13 June to consummate the conspiracy by dynamiting the buildings. Trial was properly bad in Vance County, S. v. Warren, 227 N.C. 380, 42 S.E. 2d 350; S. v. Lea, 203 N.C. 13, 164 S.E. 737.

The bills show that L. E. Allen, C. D. Fentress, and W. C. Wilson testified before the .grand jury. The evidence at the trial shows these witnesses 'are members of the S. B. I. Wilson and Fentress testified at the trial. They related (confessions made by Walker, Jarrell, Pegram, and Abbott. Allen did not testify at the trial. The court refused to permit defendants to examine members of the .grand jury to determine what evidence they heard to induce .them to return a true bill. The court ruled correctly. S. v. Blanton, 227 N.C. 517, 42 S.E. 2d 663; S. v. Levy, 200 N.C. 586, 158 S.E. 94; S. v. Broughton, 29 N.C. 96; S. v. Ernster, 179 N.W. 640; S. v. Lewis, 38 La. Ann. 680; 27 Am. Jur. 720. The reason for the holding is aptly expressed by Adams, J., in S. v. Levy, supra: “The suggested practice would hinder the trial and result in useless delay. It would (often require the ex*478amination of -a number of witnesses, 'including, perchance, members of the grand jury; it would demand of the judge that he invade the province of the grand jury or exercise the functions of a petit jury finding the .facts from 'conflicting evidence and passing upon the credibility of witnesses; it would turn the Superior Court into a forum for an unseemly contest between members of the grand jury and those whom they may have charged with crime. Besides, such practice is unnecessary; if the evidence is incompetent it will be excluded by the trial court.”

Even if the court had ruled erroneously on tire motion relating to one bill of indictment, such ruling could not avail defendants on this .appeal. They have been convicted and sentenced on three bills. The sentences are identical and run concurrently. Error would have to appeal’ a® to -all three to be .prejudicial. S. v. Thomas, 244 N.C. 212, 93 S.E. 2d 63; S. v. Williamson, 238 N.C. 652, 78 S.E. 2d 763; S. v. Hicks, 233 N.C. 511, 64 S.E. 2d 871.

Motions to quash after the evidence was in and motions to non-suit had been overruled came too late. S. v. Williamson, 250 N.C. 204; S. v. Gales, 240 N.C. 319, 82 S.E. 2d 80; S. v. Suddreth, 223 N.C. 610, 27 S.E. 2d 623.

Defendants next assert then rights were prejudiced by permitting the witness Aaron, on redirect examination, to explain why he' had communicated with the president of the mill and> law enforcement officers with respect to Auslander’s proposal and the witness’s subsequent trips to Henderson. He had been subj ected to rigorous cross-examination. It was in evidence that he had been convicted of several criminal acts. He was out of work. At least a portion of his expense in Henderson and Roanoke Rapid® was paid by the S. B. I. Enmity on Aaron’s part to Auslander was claimed. These facts would support 'an argument that Aaron was prompted to testify because of his hate for Auslander or from mercenary motives. Either would render his testimony of dubious value. Hie unworthiness of belief was strongly argued before us. Manifestly it was competent in that situation for Aaron to explain his reason for communicating with the officers. The evidence was intended only to repel defendants’ attack on the witness’s credibility. ' It was competent. Stansbury, N. C. Evidence, sec. 50 and 51.

Defendants contend their rights have been prejudiced by improper argument made by one of the prosecuting attorneys. These assignments are not based on exceptions taken 'at the trial. Notwithstanding this failure of defendants to take exceptions, we consider the .assignments. During the argument of Mr. Hooks defendants asked the court to permit the jury to retire. Their request was allowed. The *479record'shows: “The defendants then objected to the following statement they say was made by Mr. Hooks: ‘No one has gone" on the stand to testify .as to Aaron’s discredibility, on behalf of the defendants, except the lawyers.’

“COURT: Is that the statement yon made. :

“MR. HOOKS: Substantially, yes, sir. I said, ‘Nobody has testified to anything except the lawyers in this ease contradicting what this witness has said.’ ”

Defendants thereupon moved for a mistrial which was denied. Defendants assert the argument was improper and forbidden by the statute, G.S. 8-54, because the defendants had not elected to testify. They offered no evidence. Defendants’ contention is not well founded. To correctly interpret .and apply the statute, it should be remembered that at common law, both in England and in this country, parties were not competent witnesses and were not permitted to testify. Relaxation of this rigorous rule begian in England early in the administration of Queen Victoria when .so much remedial legislation was adopted. North Carolina .shortly thereafter modified the law of exclusion, c. 23, Laws 1856-57, ¡but it was not until 1881 when the .privilege now accorded to a defendant in -criminal actions to testify or to remain mute without creating a presumption against him was enacted. S. v. Wilcox, 206 N.C. 691, 175 S.E. 122.

An admission of guilt by defendant was competent evidence prior to 1881 just as it is competent today. Then ¡as now the law applied and gave effect to the .assumption that one charged with crime and wrongful conduct would not remain ¡silent when he had >an opportunity to speak. Such silence was evidence of guilt. S. v. Crockett, 82 N.C. 599; S. v. Bryant, 235 N.C. 420, 70 S.E. 2d 186.

Counsel should, base their .argument on the evidence and the fair inferences which may be drawn therefrom. Guilt must be ascertained from the evidence. S. v. Roach, 248 N.C. 63, 102 S.E. 2d 413; S. v. Roberts, 243 N.C. 619, 91 S.E. 2d 589; Cuthrell v. Greene, 229 N.C. 475, 50 S.E. 2d 525; S. v. Little, 228 N.C. 417, 45 S.E. 2d 542.

Since the admission of guilt by failure to deny .a charge ¡of crime is evidence of guilt, a solicitor may properly so argue. In 1881 when the barrier was removed, .preventing the accused from testifying and according him a .privilege, -it was proper to provide that his failure to utilize the privilege so given should not ¡be regarded as an implied admission. Hence the language used by the Legislature, G.S. 8-54, “his failure to make such request shall not create any presumption against him,” was entirely proper.

But the remark to which the objection .is made'does not specifically point to the failure of the defendants to take the stand. It does *480not 'argue any .admission of guilt by them because of such failure. The aa-gument must be viewed in the light of the evidence. Aaron, the principal witness for the State, had been sharply cross-examined. We may assume that the defendants in their .argument to the jury had challenged 'his credibility. He had .testified that at the inception of the conspiracy four were present: Auslandor, in whose mind the crime originated, the witness Aaron, Auslander’s assistant, Dave Harris, >and E. C. McBryde. So far as appears, neither Harris nor Mc-Biyde took part in the conspiracy.

They were merely silent observers. If Aaron’s testimony with re- . speot to the very inception of the conspiracy was false, the whole case would fall. It was not improper for the solicitor in this situation to say that no one had testified in contradiction of Aaron. S. v. Hooker, 145 N.C. 581; S. v. Weddington, 103 N.C. 364.

At the request of defendants the court reporter took the remainder of Mr. Hooks’ argument. Defendants now assign other portions of his argument as error entitling them to a new trial. No. objection was made at the time. The portions assigned as error are, when tested by correct legal principles, not improper and form no basis for a mistrial. The court in its charge was careful to inform the jury that the defendants had a right to elect whether they would or would not testify and that their failure to do so should not be considered by the jury against them or to their prejudice as they were exercising a right given by law.

By assignments of error 35, 36, 133, 116, 96, 97, 98, 37, 51, 152, and 121-132 defendants assert that they have not had a fair and impartial trial which the law guarantees to every defendant.

It would seem needless to say that every person charged with crime is, when placed on trial in the courts of North Carolina, entitled to a fair and impartial trial. We have repeatedly so declared. S. v. Grayson, 239 N.C. 453, 80 S.E. 2d 387; S. v. Phillips, 240 N.C. 516, 82 S.E. 2d 562, and numerous cases there cited. If, as defendants contend, they have not had a fair -and impartial trial, the judgment directing their imprisonment ought to and would be vacated and a new trial ordered.

We have already dealt at length with most of defendants' contentions. Perhaps the opinion is already unduly protracted, but the mere assertion that a defendant has been deprived of a fair trial requires discussion. For that purpose we pick the assignments which seem to typify the basis for the assertion. The contention is that the prosecutor sought to introduce in the trial evidence of other crimes for the purpose of influencing the juay. It is quite true, as defendants argue, that evidence of crime committed by a defendant *481totally unrelated to the exime with which he is charged is immaterial and hen.ee should not be offered. In applying this general rule ¡the court excluded evidence and ¡directed the jury not to consider evidence which seems to us to have 'been ¡competent. The ¡rulings by the court were not prejudicial but favorable to defendants. Of course the State had no right to except to these rulings ¡which we think unnecessarily limited .the evidence ¡on wdxich the State was entitled to rely. We pick as typical ¡of the assignments relied upon numbers 35, 36, and 51.

The S. B. I. agent, Wilson, testified as to the statements made 'by Walker ¡and the other defendants on the night of their arrest. The witness was relating the statement of Walker when he was asked:

“What else did he tell you?

“I asked Walker what he told the man at Roanoke Rapids about him furnishing all of the dynamite in the violence of Henderson—

“Objection. . .

“WITNESS (continuing): Walker said he told the man that he had supplied all of the dynamite . . .

“Motion .to strike the .answer on the ground it attempts to connect Walker with other crimes with which he ¡is not here charged.

“SUSTAINED. You wall not consider ¡his answer, gentlemen. Dismiss it from your minds.”

Thereupon a motion for mistrial was made. The jury was permitted to retire. When the jury returned, “The Court Reporter, at the request of Mr. Hooks, repeats the last statement of the witness Wilson. Defendants move for a mistrial ¡on the ground of repetition of that highly prejudicial statement.

“COURT: You will not consider anything about that question or the answer thereto, gentlemen. Dismiss it.

“Q What else wa.s said by Walker?

“A And that he fixed the bombs and ¡carried them to the person Who used them . . .

“Objection — Sustained.

“•COURT: You will not consider the answei’ to the question. Dismiss it from your minds.

"DEFENDANTS MOVE FOR A MISTRIAL. DENIED.

“Walker said that although ¡he told the man this, that this was not time, that ¡he was only bragging to ¡him.” The foregoing portion of ¡the recoi'd constitutes ¡assignments 35 and 36.

Aaron testified that at the conference at the motel in Roanoke Rapids with Pegi’-am, Walker, and others, there was discussion as to how -to effectively destroy the ¡transformers and electric lines furnishing power to Harriet Cotton Mills. It may he ¡assumed from the testimony that the Power Company had several transformers at its *482substation. It was necessary to ascertain which transformer should be destroyed to prevent the transmission of power. Aaron testified: “Pegram said that .'he did not think that if we knocked that transformer out that it would knock out the lights at both mills and I told him we were not interested in the North Henderson 'mill and then there was a lot of discussion about where the power came from feeding the South Henderson mill.

“Q What was said about that?

“A Pegram said it come from Greystone. He said, ‘The reason I know, you remember when I throwed the cap . . .’

“Objection by the defendants.

“COURT: Objection overruled.

EXCEPTION BY DEFENDANTS EXCEPTION #45.

“WITNESS (continuing): He said the reason he knew it come from Greystone, he said that when he threw the cowobadn across the high-tension wires and he looked at Robert and he says, ‘Don’t you know, Robert, when we knocked the lights out at the North Henderson plant?’ And he ©ays, ‘The South Henderson plant did not go out.

“Objection (by the defendants) and motion to strike.

“COURT: Motion allowed. You will not consider his answer, gentlemen; dismiss .it from your minds.”

The testimony objected to relates to crimes distinct from the criminal charge then being heard, but it must be remembered that the State did not offer .to prove the truth of the statements made by Walker .and Pegram. The competency of the evidence rests upon their assertion that their experience and knowledge made them ideally fitted to confederate and become conspirators and follow the leadership of Aaron. It was immaterial whether the lights had gone out at two Henderson mills because of 'wrongful conduct by someone with the transformers. It -was material that Pegram claimed to know which transformers had been destroyed. The State did not seek to ©how that Walker had in fact furnished the dynamite for other violence in Henderson. It sought to show, and it was competent for it to ©how that Walker, professing his skill and ability to accomplish the purpose of the conspiracy, should .boastfully make such a claim. Since tire evidence was competent even though excluded, it necessarily follows that no prejudice a-rose by the insistence of th-e prosecutor in presenting it to tíre jury. S. v. McClain, 240 N.C. 171, 81 S.E. 2d 364, and .authorities there cited.

As previously noted, a tape recorder was placed in Aaron’s motel room with his consent and was so placed for the purpose of recording conversations .among the conspirators. Evidence so obtained was, as to those engaged in the conversations, not incompetent. Irvine v. Cal*483ifornia, 347 U.S. 128, 98 L. Ed. 561. The solicitor had the S. B. I. agent who installed it show how the machine operated. This testimony was objected to and forms the basis of assignments 121-132. Since the evidence there obtained was .competent as to the participants, it was competent to demonstrate or explain how the machine operated. Perhaps some of the jurors had never seen such a machine -in operation.

After the witness had explained its opei’ation, the solicitor offered the recordings in evidence. When he offered the recordings he frankly said to the court: “I have heard those recordings. In my opinion they contain matters that are not entirely competent in the evidence in this case because of their relation to other matters. We offer here the -tapes and the recordings. We offer them for use by the defendants, if they desire, and we offer them in evidence in corroboration of the witnesses in this case who have testified about those matters.”

Defendants objected to the use of the tapes and moved for a mistrial, “on the grounds of the Solicitor’s statements in the presence of the Jury to his Honor and on the grounds the Solicitor has tried to take unfair advantage of the defendants by putting the defendants on a spot.” The count sustained the objection. Defendants moved for a mistrial. This motion was denied.

Defendants argue the offering of these tape recordings was so unfair a® to demonstrate a deliberate intent on the part of the prosecutor to -prejudice them and prevent ,a fair trial. This contention must be weighed in the light of the testimony and the rulings which the court bad made. When the recording was played to defendant Pegram, he recognized 'his voice, but is quoted a® saying the recording “sounded like a bunch of drunks- playing poker.” Manifestly, defendants- -intended to challenge the accuracy of the -recording which, according -to the State, caused Walker, Abbott, and Jarrell to confess their participation and Pegram to refuse to -deny the charge of conspiracy. ■

The court, on objection by defendants, had/ excluded declarations made by some- of the defendants for the purpose of showing their fitness for their part in the conspiracy. As previously stated, this evidence was competent against the speaker even though it related to other crimes. This was apparently ¡the view which the -solicitor took when he offered the evidence. Unlike defendants, an exception to an erroneous ruling would not avail him.

The tape recording played -an important part in the trial of the ease. If the solicitor had not offered it, -defendants could charge unfairness in withholding evidence. He could not -well answer that he did not offer it because it contained statements which he thought the court would deem incompetent. In the situation confronting him *484he did the 'proper thing. He offered it in evidence and told the count that he thought the court would hold parts of it incompetent. He made it available to the defendants. We find nothing in this record to impugn his motives.

It is the duty of the trial judge to supervise the trial of cases and to control counsel so that the panties may be assured of a fair and impartial trial. Here the trial court manifestly concluded that the accusation made 'by defendants found no support in fact. The record indicates that counsel for defendants, as well as counsel for the State, diligently sought to perform their respective duties. It may be that at times each was over zealous. It is true that the court on occasion had to admonish counsel, but we find nothing from our examination of the record which leaves the impression that the defendants were mot afforded a fair 'and impartial trial.

We have carefully examined each exception and each assignment of error. We find nothing which in our opinion would justify another trial as to any defendant.

No error.

dissenting as to defendant Payton. In my opinion, the evidence, when considered in the light most favorable to the State, is insufficient to show that defendant Payton wa.s a party to the conspiracies charged in the bills of indictment.

“The existence of a conspiracy may not be established by the ex parte declaration of an alleged conspirator made in the absence of bis .alleged coconspirator. Only evidence of the acts committed and declarations made by one of the coconspimtors after the conspiracy is formed is competent against all, and then only when the declarations are made or the acts are committed in furtherance of the conspiracy.” S. v. Benson, 234 N.C. 263, 66 S.E. 2d 893, and oases cited.

Upon this legal principle, Aaron's testimony as to what Gore and Auslander said (in Payton’s absence) Payton had said was not competent to establish that Payton was a party to the alleged conspiracies. Hence, I do not discuss the dubious probative significance of this portion of Aaron’s testimony.

The competent evidence is sufficient to establish these findings: (1) Aaron, endeavoring to contact Gore, had a telephone conversation with Payton, and Payton gave Gore Aaron’s message; (2) after his telephone conversation with Aaron, Payton telephoned Auslander, with whom Payton was in contact from time to time; and (3) Pay-ton knew Auslander had sent Aaron to the Henderson area for some purpose incident to the strike.

*485The crucial question is whether the circumstantial evidence is such that logical and legitimate inferences may be drawn therefrom to support the factual conclusion that Payton was a party to the alleged conspiracies. See S. v. Stephens, 244 N.O. 380, 93 S.E. 2d 431. In my ‘opinion, the correct answer is, “No.” However strong the suspicion, it seems to me that supposition and conjecture must be invoked to reach such factual conclusion.

Of course, if we could assume that Payton then knew the facts disclosed hy the evidence now before us, there would 'be no doubt as to the sufficiency of 'the evidence as to him. But there is no evidence that he had such knowledge at the time of his telephone conversations with Aaron and with Auslander.

Activities incident to the strike were many and varied. Conceding the sufficiency of the evidence to support a finding that Payton knew Aaron had been sent by Auslander 'to the Henderson area for some purpose incident to the strike, Payton’s guilt or innocence depends upon whether he had knowledge of and was a party to the (particular) conspiracies alleged in the bills of indictment.. In my view, the evidence, as to Payton, is insufficient to support the verdict.