Smith, C. J.,
delivered the opinion of the court.
This is an appeal from a conviction of the crime of assault and battery with intent to kill and murder. On the occasion in question appellant, who was a merchant in the town of Ackerman, was in the street near his store shooting a pistol. What then occurred can best be told in the language' of the witness Chrismond, sheriff of the county and the person assaulted; there being no dispute as to the correctness thereof: “It was on the afternoon of the 31st of October; I heard some shooting in town; and I started on- over there to investigate it; when I got there Mr. Prewitt was out on the street shooting promiscuously; when he saw me he hollored for me to go back, and when I didn’t go back, he hollered and said he would kill me if I didn’t. I went on anyway; had advanced only a few steps when he shot at me one time. I proceeded up near where he was at — he was telling me to stop all the time. I stopped and told him that I wasn’t armed, and, that I hadn’t come over for any trouble — just reasoning the matter with him — told him the circumstances, that I was over there in an official capacity, and that I demanded order on the streets; just talked to him as fast as I could; don’t remember exactly what all I did say. He was standing behind a tree till after I told him that I was not armed; he then came out from behind the tree and shot me.” There was evidence indicating that appellant was drunk at the time of the shooting. His sole defense was [85]*85insanity, and there was some evidence in support thereof, consisting principally of the opinions of witnesses who had known him, and of the fact that his father, nncle and five other blood relatives had been insane. The acts of appellant other than the shooting of Chrismond, on which the opinions of these witnesses were based, were few in number and of such character that the jury was well warranted in finding that they were not inconsistent with the conduct of a sane man. We find no reversible error in the record, and only two of the assignments thereof require special notice.
After introducing evidence of the insanity of his father and other blood relatives, appellant asked two of the physicians who testified in the case “whether or not insanity is hereditary and transmissible,” which question, on the objection of the state, the court declined to permit the witnesses to answer. The court might very properly have allowed this question to have been answered, but its •declining so to do does not constitute a reversible error, if error, in fact, at all. That insanity is hereditary, as hereinafter explained, is a matter of common knowledge, .and is therefore a fact not necessary to be proven. The court takes judicial notice of it.
The evidence of insanity among his blood relatives, which appellant had already introduced, was admissible solely on the ground that insanity is hereditary. Atone time it seems to have been supposed that this fact must be proven in each case before evidence of insanity among the blood relatives could be received. Rex v. Tuckett, 1 Cox’s Crim. Cas. 103. But we venture to.say that no court of to-day would so hold. The fact seems now to be assumed by all of the courts and authorities without question. 1 Wigmore on Evidence, section 232; 1 Wharton & Stille, Medical Jurisprudence, section 576 et seq.; Baxter v. Abbott, 7 Gray (Mass.) 71; State v. Christmas, 51 N. C. 471.
To exclude facts from evidence which depend for their value upon the law of heredity for the reason that such [86]*86law has not been proven is, or should be, as shocking to-the, judicial mind as the exclusion of facts from evidence depending upon the law of gravity for the reason that such law has not been proven. Heredity, “is a universal law of organic life,” and is defined as “that biological law by which all beings endowed with life tend to repeat themselves in their descendants.” 1 Wharton & Stille,. Medical Jurisprudence, section 576.
But even if we are mistaken in this, any possible error in the ruling complained of was cured by the granting of appellant’s first instruction, for “it cannot be too definitely stated,” in the language of 14 Encyclopedia Brit-tanica (11th Ed.), p. 597, subtitle “Inheritance,” “that it is not the insanity which is inherited, but only the predisposition to the manifestation of mental symptoms in the presence of a sufficient exciting cause,” and,, in the> language of the court in Baxter v. Abbott, 7 Gray (Mass.) 71, the admissibility of evidence of insanity of blood relatives “rests upon the ground of the hereditary character of insanity; that a predisposition to the disease is frequently transmitted from parent to child. With such predisposition, the malady may not show itself 'in the child for the child may not be exposed to any exciting cause. But with such hereditary taint, insanity supervenes from slight causes — causes apparently wholly inadequate to affect a mind without the predisposition.” This first instruction is as follows: “The court instructs the jury that it has been proven in this case by undisputed testimony that there is insanity in the family of the defendant, and that a predisposition or susceptibility to insanity on the part of the defendant has been proven, and that in your consideartion of this case you should treat these facts as established.”
Dr. B. P. Prewitt, an uncle of appellant, was sworn as-a witness in his behalf, and gave as his opinion, based on his personal knowledge and observation of appellant,, that he was insane at times. He was not asked and did. [87]*87not state wlien and for what periods of time appellant had appeared to him to he insane. He was then qualified as an expert on insanity and was asked if he had heard all of the testimony in the case, and he replied that he had heard “some of it,” without stating what parts of it he had heard. He was then asked the following question, which was objected to by the state and the objection sustained : “Prom the testimony you have heard, and about the shooting as it occurred out there in front of Prewitt’s store, his manner and conduct on that occasion, his conduct in his home, his statement on the way to jail, his statement to the deputy marshal at the jail, taking all this testimony and facts stated about his manner of shooting inside of his store and promiscuously up and down the street and in his yard, what would you say about the defendant, at the time he shot Mr.
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Smith, C. J.,
delivered the opinion of the court.
This is an appeal from a conviction of the crime of assault and battery with intent to kill and murder. On the occasion in question appellant, who was a merchant in the town of Ackerman, was in the street near his store shooting a pistol. What then occurred can best be told in the language' of the witness Chrismond, sheriff of the county and the person assaulted; there being no dispute as to the correctness thereof: “It was on the afternoon of the 31st of October; I heard some shooting in town; and I started on- over there to investigate it; when I got there Mr. Prewitt was out on the street shooting promiscuously; when he saw me he hollored for me to go back, and when I didn’t go back, he hollered and said he would kill me if I didn’t. I went on anyway; had advanced only a few steps when he shot at me one time. I proceeded up near where he was at — he was telling me to stop all the time. I stopped and told him that I wasn’t armed, and, that I hadn’t come over for any trouble — just reasoning the matter with him — told him the circumstances, that I was over there in an official capacity, and that I demanded order on the streets; just talked to him as fast as I could; don’t remember exactly what all I did say. He was standing behind a tree till after I told him that I was not armed; he then came out from behind the tree and shot me.” There was evidence indicating that appellant was drunk at the time of the shooting. His sole defense was [85]*85insanity, and there was some evidence in support thereof, consisting principally of the opinions of witnesses who had known him, and of the fact that his father, nncle and five other blood relatives had been insane. The acts of appellant other than the shooting of Chrismond, on which the opinions of these witnesses were based, were few in number and of such character that the jury was well warranted in finding that they were not inconsistent with the conduct of a sane man. We find no reversible error in the record, and only two of the assignments thereof require special notice.
After introducing evidence of the insanity of his father and other blood relatives, appellant asked two of the physicians who testified in the case “whether or not insanity is hereditary and transmissible,” which question, on the objection of the state, the court declined to permit the witnesses to answer. The court might very properly have allowed this question to have been answered, but its •declining so to do does not constitute a reversible error, if error, in fact, at all. That insanity is hereditary, as hereinafter explained, is a matter of common knowledge, .and is therefore a fact not necessary to be proven. The court takes judicial notice of it.
The evidence of insanity among his blood relatives, which appellant had already introduced, was admissible solely on the ground that insanity is hereditary. Atone time it seems to have been supposed that this fact must be proven in each case before evidence of insanity among the blood relatives could be received. Rex v. Tuckett, 1 Cox’s Crim. Cas. 103. But we venture to.say that no court of to-day would so hold. The fact seems now to be assumed by all of the courts and authorities without question. 1 Wigmore on Evidence, section 232; 1 Wharton & Stille, Medical Jurisprudence, section 576 et seq.; Baxter v. Abbott, 7 Gray (Mass.) 71; State v. Christmas, 51 N. C. 471.
To exclude facts from evidence which depend for their value upon the law of heredity for the reason that such [86]*86law has not been proven is, or should be, as shocking to-the, judicial mind as the exclusion of facts from evidence depending upon the law of gravity for the reason that such law has not been proven. Heredity, “is a universal law of organic life,” and is defined as “that biological law by which all beings endowed with life tend to repeat themselves in their descendants.” 1 Wharton & Stille,. Medical Jurisprudence, section 576.
But even if we are mistaken in this, any possible error in the ruling complained of was cured by the granting of appellant’s first instruction, for “it cannot be too definitely stated,” in the language of 14 Encyclopedia Brit-tanica (11th Ed.), p. 597, subtitle “Inheritance,” “that it is not the insanity which is inherited, but only the predisposition to the manifestation of mental symptoms in the presence of a sufficient exciting cause,” and,, in the> language of the court in Baxter v. Abbott, 7 Gray (Mass.) 71, the admissibility of evidence of insanity of blood relatives “rests upon the ground of the hereditary character of insanity; that a predisposition to the disease is frequently transmitted from parent to child. With such predisposition, the malady may not show itself 'in the child for the child may not be exposed to any exciting cause. But with such hereditary taint, insanity supervenes from slight causes — causes apparently wholly inadequate to affect a mind without the predisposition.” This first instruction is as follows: “The court instructs the jury that it has been proven in this case by undisputed testimony that there is insanity in the family of the defendant, and that a predisposition or susceptibility to insanity on the part of the defendant has been proven, and that in your consideartion of this case you should treat these facts as established.”
Dr. B. P. Prewitt, an uncle of appellant, was sworn as-a witness in his behalf, and gave as his opinion, based on his personal knowledge and observation of appellant,, that he was insane at times. He was not asked and did. [87]*87not state wlien and for what periods of time appellant had appeared to him to he insane. He was then qualified as an expert on insanity and was asked if he had heard all of the testimony in the case, and he replied that he had heard “some of it,” without stating what parts of it he had heard. He was then asked the following question, which was objected to by the state and the objection sustained : “Prom the testimony you have heard, and about the shooting as it occurred out there in front of Prewitt’s store, his manner and conduct on that occasion, his conduct in his home, his statement on the way to jail, his statement to the deputy marshal at the jail, taking all this testimony and facts stated about his manner of shooting inside of his store and promiscuously up and down the street and in his yard, what would you say about the defendant, at the time he shot Mr. Chrismond, as to his sanity or insanity?” After some further examination he was then asked this question: “Now, Doctor, I will ask you this question, having sat here and heard the testimony in the case, you also heard the testimony introduced here when this case was tried here about two weeks ago?” to which he answered, “Yes, sir.” Pie was then asked the following question, which was objected to and the objection sustained, and these rulings of the court are assigned for error: “Knowing’the defendant in the case as you have known him all your life with reference to this question of mental disorder, the family having been affected, different members that come under your observation, and having heard the testimony which has been introduced here, as to how this shooting occurred, the defendant being in his store firing off his pistol and shooting promiscuously up and down the street, with a wild and unnatural look on his face and in his eyes, his unusual manner and expression going out on the streets after Chrismond, then shooting him, turning around, and going on to his residence shooting around there in his own yard, taking all of these circumstances [88]*88in detail, and the fact that Chrismond was not trying to do him any violence at the time he shot him, taking all these various statements from these different witnesses as being the facts as to his condition, acts, and demeanor, and that coupled with your own knowledge, I will ask you to state what your opinion was, whether B. F. Prew-itt was sane or insane at the time when he shot Mr. Chris-mond. ’ ’
It will be observed that these questions follow none of the rules laid down for the examination of an expert witness. They mix an imperfect hypothetical statement of facts with the information obtained by the witness from listening to the testimony of the other witnesses, and the second question calls for an opinion based both on personal knowledge of the defendant and upon an examination of the facts testified to by the other witnesses at the trial.
“The usual and proper method of examinining an expert where it is sought to obtain his opinion is to propound to him a hypothetical question, i. e., one which is-sumes the truth of facts which the evidence tends to support, and which are stated in accordance with the theory of the examiner; and . . . where the witness is not testifying to his own knowledge the only proper course is to ask him a hypothetical question, and that it is important that the form of the question should be such as not to require or permit him to draw conclusions of fact from the evidence in the case, and that where the evidence is conflicting, or relates to many details, or where inferences of fact must be drawn from the evidence, in order to be reasonably certain of the grounds on which an opinion is based, it is usually necessary that the facts should be stated hypothetically.” Encyclopedia of Evidence, vol. 5, p. 615; Reed v. State, 62 Miss. 405.
It is true that there is very little conflict in the facts testified to by the various witnesses, and where there is no conflict in the evidence, it may be convenient to allow [89]*89the witness to be asked Ms opinion generally upon the testimony, without embodying it in a hypothetical question; but allowing this to be done is purely a matter of discretion with the court, and cannot be insisted upon as a matter of right. Reed v. State, 62 Miss. 409. And moreover, this witness expressly stated that he had only heard “some of” the evidence, and one of the questions was based partly on what he had heard of the evidence on a former trial with which the jury, before whom he was testifying, was, of course, not familiar. The jury must know on what facts the witness bases his opinion in order that they may judge of the value thereof. They are also entitled to know whether the opinion is based on facts coming under the witness ’ actual observation, or upon facts testified to by others.
Among other questions asked this witness ivere the two following, which were objected to, and the objection sustained: “I will put this question to you, Doctor. Prom your knowledge of his conduct for the last six or eight months, have you had an opportunity to observe his acts and conduct on various occasions'? And, coupling all these things with your own personal knowledge of his behavior and conduct, what would you say the condition of mind of this defendant was on the day it was done Í ’ ’ and, “Prom your own knowledge of the family history of Prewitt’s family, you have treated seven members for mental diseases, your association and knowledge of the defendant here for the last ten or twelve years, his having clerked for you in the town of Ackerman,' and your having observed his conduct on different occasions, what would you say as to his mental condition on the day of the shooting of Mr. Chrismond there in the town of Acker-man1?” The objections to these questions were properly sustained if for no other reason than that it- was not shown that the witness had had appellant sufficiently under observation on the day of the shooting to enable him to form an opinion. The only evidence on this line was [90]*90that he had seen him at a distance, hut had not spoken to him.
Affirmed.