delivered the opinion of the court.

The defendants in error instituted an action of assumpsit ragainst the Norfolk and Western Railway Company and the 'Southern Railway Company to recover damages growing ont of an alleged breach of a contract for the transportation of a carload of horses and mules over the roads of the defendant companies, connecting carriers, from Morristown, in the State of 'Tennessee, to the city of Norfolk, in this State.

The declaration bases the right of the plaintiffs to recover upon three grounds: (1) That there was'unreasonable delay In the transportation of the horses and mules; (2) that the animals were kept in the car- for more than twenty-eight consecu*602tiv'e hours without unloading them for food, water and rest, as required by section 4386 of the Revised Statutes of the United States; and (3) that the defendants failed and refused to deliver the stock to the consignees of the plaintiffs.

Upon the trial of the cause there was a verdict and judgment in favor of the plaintiffs against the Southern Railway Company. From that judgment this writ of error was awarded upon the petition of that company.

One of the errors assigned is to the action of the court in giving certain instructions to the jury at the request of the plaintiffs over the defendants’ objections. One of these instruct tions is as follows:

“The court instructs the jury that the plaintiffs claim damages in this case on three grounds, as follows: Unreasonable delay in the transportation of the horses and mules in question.

“The confinement of said horses and mules on the car for a longer period than 28 consecutive hours, without unloading same for rest, water and feeding, for a reasonable period of time, at least five consecutive hours, and unreasonable delay in delivering or failure to deliver said horses and mules; and if the jury believe, from the evidence, that the defendants, or either of them, were negligent in any one or all of these particulars, or otherwise, and that such negligence resulted in damage to the plaintiffs, then they shall find for the plaintiffs against the negligent defendant, or defendants, if the damage resulted from the negligence of both, and assess the damages against the defendants, or either of them, at such sum as the jury believe resulted from said negligence.”

Ry that instruction the question, among others, was submitted to the jury whether or not the defendants, or either of them, had caused damage to the horses and mules by keeping them on the car for a longer period than 28 consecutive hours *603without unloading them for rest, water and food for at least five hours. There was not only no evidence that the Southern Railway Company had been guilty of any negligence in that respect, hut, on the contrary, one of the agreed facts in the case is that from the time the animals were placed in the car at Morristown until they were delivered to the Norfolk and Western Railway Company at Bristol was less than fifteen hours, so that the Southern Railway Company was under no obligation to feed and water the stock whilst transporting it.

That instruction further told the jury that if the defendants, or either of them, were negligent in any one, or all, of the particulars alleged in the declaration, or otherwise, and that such negligence resulted in damage to the plaintiffs, then they should find for the plaintiffs against such negligent defendant.

The instruction was manifestly erroneous. It submitted to the jury questions of negligence not alleged in the declaration, as well as a question of negligence, which was alleged, but of which there was no proof. It has been repeatedly held by this court that it is error to give an instruction when there is no evidence tending to prove the facts upon which the instruction is based. Kimball & Fink v. Borden, 95 Va. 203, 207, 28 S. E. 207, and cases cited; Richmond Pass. & P. Co. v. Allen, 101 Va. 200, 43 S. E. 356; Seaboard, &c., Ry. Co. v. Hickey, 102 Va. 394, 46 S. E. 392. The reason for this is that the tendency of such instructions is to mislead the jury by withdrawing their attention from the legitimate points involved in the issue. Juries are sufficiently prone to indulge in conjecture without having possible facts not in evidence suggested for their consideration. Kimball & Fink v. Borden, supra, and cases cited.

It is also well settled that if a misdirection or other mistake of the court áppear in the record it must be presumed that it affected the verdict of the jury, and it is therefore a ground for *604which the judgment must he reversed, unless it plainly appears ■from the whole record that that error did not and could not have affected the verdict. Kimball & Fink v. Borden, supra, and cases cited.

Instruction 2ÑTo. 1, given at the request of the plaintiffs, also ■submitted the question of the Southern Railway Company’s liability for damages for failure to unload, feed, water and allow the stock to rest, although there was no evidence whatever to support it.

We cannot say these instructions did not affect the verdict of the jury to the prejudice of the Southern Railway Company, and for these errors the judgment complained of must be reversed.

Another error assigned is to the action of the court in refusing instruction Ro. Y, offered by the Southern Railway Company, and in giving in lieu thereof the court’s instruction Ro. 5. The language of instruction Ro. Y was misleading, if not errone■ous, and the court’s instruction given in lieu thereof properly submitted the question of concurring negligence to the jury.

The other assignments of error are not likely to arise upon another trial, and therefore need not be considered.

The judgment complained of must be reversed and the verdict set aside as to the Southern Railway Company, and the cause remanded for a new trial as to it; but as neither the plaintiffs in the court below nor the Southern Railway Company make any objection to the verdict and judgment in favor •of the Norfolk and Western Railway Company, the judgment as to it will be affirmed. Code, sec. 3395; Burk v. Campbell, 26 Gratt. 403.

Reversed.