¶1Appellee filed a verified claim in two paragraphs against the estate of Peter Hedrick. The first paragraph was a general claim for services rendered in doing house and farm work, and in nursing and caring for decedent and his wife, and for general services from March, 1902, to March, 1909. The second paragraph alleged a special contract made between decedent, in his lifetime, and appellee and her parents, by the terms of which decedent agreed that if appellee would come and work for him in his family, and take care of himself and his wife, he would pay her at the rate of $1.50 a week for her services, and, in case she stayed with him and his wife, and cared for them as long as they lived, he would give her, at his death, a certain forty acres of land; that appellee fully performed her part of the agreement, and that decedent died without having made a will, or without leaving to appellee said forty acres of land in accordance with his agreement; that the services rendered by appellee were reasonably worth $4,000; that the said sum of $1.50 a week had been paid. Defendant demurred separately to each paragraph of the complaint, which demurrers were overruled, and these rulings are assigned as error. But as appellant has failed in his brief to discuss the sufficiency of either paragraph, or to cite any authority bearing thereon, these errors will be considered as waived.
¶2It is contended by appellant that the lower court should have granted a new trial, on the ground that the verdict is not supported by the evidence, which is quite voluminous. Appellee introduced testimony tending to prove that there was a contract entered into between her and her parents on *660the one side, and Peter Hedrick on the other, before she went to live in the family of the decedent, by the terms of which contract she was to receive $1.50 a week for her labor, and in the event she stayed with the family until the death of Peter Hedrick and his wife, she was to receive forty acres of land. The evidence introduced by appellee tended to show further that in the spring of 1902 she went to decedent’s home, and lived with him and his wife and worked for them until they died, with the exception of a short time during which she was married and lived with her husband; that after her separation from her husband she returned to decedent’s home, and he renewed his promise to give her the forty acres of land; that decedent was old and sick during the time appellee lived there, and his wife was also old and feeble; that the work performed by appellee was very disagreeable, and the services were reasonably worth $1 a day; that she was paid at the rate of $1.50 a week, during the time she lived in decedent’s family, but that decedent failed to keep his contract in respect to giving her forty acres of land, or its value in money.
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¶4The jury trying the case was the sole judge of the weight of the evidence and the credibility of the witnesses. The questions of fact involved in this case were submitted to the jury, and it returned a verdict in favor of the claimant. There was evidence upon every question material to a recov*661ery, and this court cannot interfere with the verdict upon the weight of the evidence.
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¶7This instruction being erroneous, the judgment in this case must be reversed, unless it clearly appears from the whole record that the error was harmless. There was no evidence introduced tending to show that any of the services rendered by appellee were gratuitous. The evidence, without dispute, shows that appellee was to receive $1.50 a week, and that this amount had been paid. Appellee’s claim for compensation in excess of that amount is based upon the ground that the amount stipulated to be paid weekly was not intended as full payment, and that she rendered the services under an express agreement with decedent that she should be given *663forty acres of land in the event she stayed and took care of him and his wife as long as they lived. The first disputed question of fact that the jury had to determine was whether this agreement was made. If it found that this agreement was made, the only other disputed question was, what amount such services were worth in excess of $1.50 a week. The question as to whether any services were gratuitously rendered was not before the jury, and no instruction should have been given bearing upon this subject. An erroneous instruction as to the burden of proof on this question did not harm the appellant, for the reason that if the jury had found that the services of appellee were rendered gratuitously, there would have been no evidence to sustain such a finding. City of Indianapolis v. Cauley (1905), 164 Ind. 304, 312; Indianapolis, etc., Transit Co. v. Haines (1904), 33 Ind. App. 63; McCall v. Seevers (1854), 5 Ind. 187.
¶8If the verdict had been against appellee, she might have complained of this instruction, for the reason that it submitted to the jury the question as to whether her services, or a part thereof, were gratuitously rendered, where there was no evidence which would justify a finding against her on that question. McMahon v. Flanders (1878), 64 Ind. 334; Moore v. State (1879), 65 Ind. 382.
¶9In the case of Hunt v. Osborn, supra,the court said: “The question on which the decision of the case hinged was whether, at the time the services were rendered, the appellee expected to charge for them. It was claimed by the estate that they were mere acts of neighborly kindness rendered without charge or expectation of pay therefor at the time, and that the charge now made was an afterthought.” The question as to whether the services were gratuitously rendered was the pivotal question in that case; but in this case, no such question was presented by the evidence. As there is no evidence tending to prove that any of the services rendered by appellee to decedent were gratuitous, and as a finding in favor of appellant on this ground would have *664no evidence to support it, we hold that an erroneous instruction as to the burden of proof on that question did not harm appellant.
¶10Judgment affirmed.