This action was commenced in the circuit court of Jackson County, Missouri, on January 30, 1909, to contest the last will and testament of Mrs. Nona Ferguson, a widow, who died in said county on January 6, 1909, possessed of real and personal property located in said county. She left no lineal descendants at the time of her death. It is charged in the petition that no surviving kindred of Mrs. Ferguson, of any degree, are known to plaintiffs; that the latter are the only persons having any interest as heirs or devisees in Mrs. Ferguson’s estate; that they claim their respective interests under a will made by said testator *133in 1905, and that the defendants herein are the only other persons known' to plaintiffs who claim any interest in said estate.

It appears from the record that Mrs. Fergnson, on December 14,1908, executed an. instrument purporting to be her last will and testament. Defendant J. H. Martin, one. of the legatees, is named as executor of said will. The principal legatee named therein is defendant Lou Westall — wife of Frank Westall — who is given the real estate and the bulk of testator’s property.

Appellants charge in petition, and at the trial attempted to show, that the will aforesaid was procured through undue influence exercised by defendants over the mind of testator; and that the latter was nientally incompetent to make a will, etc.

The abstract of record contains the following:

“Defendants to sustain the issues upon their part further offered, and introduced the testimony of James Cole and James H. Hawthorne, witnesses to the execution of said paper writing, Dr. Franklin E. Murphy, Dr. George C. Mosher, Mrs. Allen H. Draper, Allen H. Draper, James H. Martin, I. Schwartz, Sophie Johnson and Lou Westall, who, among other things,-testified that in their opinion Nona Ferguson was sane, and related incidents of her conduct which defendants claimed tended to show that said Nona Ferguson was sane.

‘ ‘ Plaintiffs in order to sustain the issues upon their part offered and introduced the testimony of Mrs. Dora Webster, Dennis J. Stroub, Anna O. Stroub, Mrs. J. A, King, Dr. H. P. Hueyette, Mrs. Minnie M. Lord, Dr. James E. Trexler, Mrs. Hattie Shepherd and Regina Stroub, who testified that in their opinion Nona Ferguson was insane at the time said paper writing was executed, and related incidents of her conduct which the plaintiffs claimed tended to show that Nona Ferguson was insane. ’ ’

*134The trial court gave to the jury instructions purporting to cover the two grounds of contest supra, and hence we infer that there was evidence tending to show want of mental capacity upon the part of testator to make a will, as well as undue influence brought to bear upon the mind of testator which induced the making of same. The instructions given in the trial below will be considered hereafter.

The jury returned a verdict for defendants, -sustaining the will, on June 20, 1912, and judgment was entered on said verdict in due form.

Plaintiffs filed motions for new trial and in arrest of judgment. Both motions were overruled and the cause duly appealed to this court.

Witness'! aS I. Mrs. Lou Westall was one of the principal beneficiaries in Mrs. Nona Ferguson’s alleged will. Her husband, H. F. Westall, over the objection of plaintiffs, was permitted to. testify in behalf of the defendants, other than his wife, as to the sanity testator. Appellants contend that said witness was incompetent to testify, and assign as error the action of the trial court in permitting him to do so.

We may say in passing, that if H. F. Westall was a competent witness for any person, his testimony would .inure to the benefit of his wife as well as the other legatees in the will, for the latter must stand or fall as a whole. [Schierbaum v. Schemme, 157 Mo. l. c. 17 and following; Wood v. Carpenter, 166 Mo. l. c. 485; King v. Gilson, 191 Mo. l. c. 333; Meier v. Buchter, 197 Mo. l. c. 92; Seibert v. Hatcher, 205 Mo. l. c. 101-2; Teckenbrock v. McLaughlin, 209 Mo. l. c. 541-2.]

Mr. Westall is not a beneficiary in the will, nor is he a party to this action. If the will is sustained, the property acquired thereunder by his wife would become at once her separate estate, and both the real and personal property bequeathed to her could be sold, or *135encumbered by her without any reference to her husband.

It does not appear from the record that Mrs. Westall was present at any of the times referred to by ber husband when be observed tbe acts and conduct of testator. He was not asked to state any conversation be bad witb testator, or any other person. He was simply called upon to express bis opinion as a non-professional witness, based upon what be observed while in tbe presence of testator. We find nothing in our statutes, nor in tbe provisions of tbe common law construed in connection witb tbe statutes, which would preclude Mr. Westall from testifying as he did, in behalf of all tbe defendants to this action.

Tbe conclusion just reached is strongly supported by tbe following authorities in this State, and elsewhere: Lead & Zinc Inv. Co. v. Lead Co., 251 Mo. l. c. 741; Brown v. Patterson, 224 Mo. l. c. 651-2; Weiermueller v. Scullin, 203 Mo. l. c. 469 and following; Lynn v. Hockaday, 162 Mo. l. c. 121 and following; Shanklin v. McCracken, 140 Mo. l. c. 356 and following; Banking House v. Rood, 132 Mo. l. c. 258 and following; The First Nat. Bank of St. Charles v. Payne, 111 Mo. 297 and following; Bates v. Forcht, 89 Mo. l. c. 126 and following; German-American Bank v. Camery, 176 S. W. l. c. 1077; Denning v. Butcher, 91 Iowa, 432-3 and following; Kostelecky v. Scherhart, 99 Iowa, l. c. 124-5.

Tbe Missouri authorities supra review the common law and our statutes in reference to tbe matter under consideration here, and in our opinion sustain the right of H. F. Westall to testify as be did in tbe trial below. Appellants contention, therefore, that Mr. Westall was an incompetent witness, is overruled.

II. Plaintiffs assign as error tbe action of tbe trial court in giving, at tbe instance of defendants, instruction numbered seven, which reads as follows:

*136statecun Alternative. “The jury are further instructed that if you find and believe from the evidence that at the time of the making of the paper writing propounded herein as the. Nona Ferguson, that she, the' said Nona Ferguson, was not of unsound mind and incapable of making a will, or that the said paper writing was not procured to be made and executed by undue influence, exercised with or- upon her by the defendants herein, then you must find that said paper writing is the will of the said Nona Ferguson.”

It is charged in the petition, and plaintiffs’ evidence tends to show, that Mrs. Nona Ferguson was mentally incapable of making a will and that she was unduly influenced to execute the instrument offered as her last will and testament. This instruction is complete within itself, and authorized the jury to return a verdict sustaining the will, if they believed téstator was mentally capacitated to make one, although the jury might believe from the evidence that she had been unduly influenced by defendants to do so. On the other hand, it authorized the jury to sustain the will, if testator was not unduly influenced by defendants to execute it, although they might have believed from the evidence, that she was mentally, incapacitated to make a will. On the facts presented by the record, the jury should have been told in substance, that if testator was mentally capable of making a will, and that the instrument offered and read in evidence, as Mrs. Ferguson’s last will and testament, was not procured through the undue influence of said defendants or either of them, then the jury should return a verdict sustaining said will.

The above instruction is palpably erroneous, and the giving of same necessitates the reversal of the cause.

III. Complaint is made of defendants’ instruction numbered nine, which reads as follows:

*137Monomania “The jury are further instructed that should you find and 'believe from, the evidence that, prior to or at the time of the making of the paper writing in evidence before you, the mind of the said Nona. Ferguson was unsound or impaired in one or more particulars, yet practically sound and unimpaired in all others, if you so find, still you will not be warranted or justified in finding that by reason of such unsoundness, if any, or impaired condition, if any, she was thereby mentally incapacitated from making a will, but before you can find that said paper writing is not the will of the said Nona Ferguson, you must find and believe from the evidence that by reason of the unsound ■or impaired condition of her mind (if in fact you find such condition or conditions did exist), she was thereby rendered unable to transact her ordinary business and was thereby rendered incapable of understanding the nature and extent of her property and of appreciating the natural objects of her bounty.”

This instruction informed the jury that if Mrs. Ferguson’s mind was “unsound” in “one or more particulars,” yet sound in all others, the jury would not be justified in finding, that by reason of such unsoundness, she was mentally incapacitated from making a will. In other words, if the jury believed she was unable to transact her ordinary business and was incapable of understanding the nature and extent of her property (both of which might have been included in the one or more particulars above mentioned), yet the jury would not be warranted in finding from the above, that testator was incapable of making a will. But this is not the only objection to said instruction. It concludes as follows:

“But before you can find that said paper writing is not the will of the said Nona Ferguson, you mu,st find. . . . that by reason of the unsound . . . condition of her mind . . . [a] she was thereby rendered unable to transact her ordinary business, and *138[b] was thereby rendered, incapable of understanding the nature and extent of her property and [c] of appreciating the natural objects of her bounty.”

If testator, at the time of the execution of the •will, bad possessed the qualifications negatived in paragraphs a, b, and c, supra, she would have been competent to make a will under the laws of this State. The instruction, however, as it reads, imposed upon plaintiffs the burden of showing that testator was deficient in respect to all the matters referred to in sub-propositions a, b and c when the jury might have concluded from the evidenec that Mrs. Ferguson was incompetent to transact her ordinary business, and was incapable of understanding’the nature and extent of her property.' If testator was mentally incompetent to transact her ordinary business and was incapable of understanding the nature and extent of her property, she was not qualified under the law to make a will, although she might have appreciated the natural objects of her bounty, as stated in said instruction.

The above charge is not only misleading, but does not properly declare the law and should not have been given in its present form.

IY. On account of the errors heretofore pointed out, the cause is reversed and remanded, in order that it may be proceeded with in conformity to the views here expressed.

PER CURIAM.^ — The foregoing opinion of Raiusy, C., is hereby adopted as the opinion of the court.