The defendant was convicted of murder in the first degree, armed robbery, and unlawful possession of a firearm. There was no recommendation by the jury that the death penalty be not imposed. A sentence of life imprisonment was imposed on the armed robbery conviction and a sentence of from two and one-half to four years on the firearm conviction. The defendant’s appeal is before the court pursuant to G. L. c. 278, §§ 33A-33G.
Only a brief summary of the evidence presented at trial is required. The principal witness for the Commonwealth was Florence Piper, whose testimony was substantially as follows. She was acquainted with the defendant on February 26, 1971, and on that date she was with him in the Shanty Lounge in Boston until about 10:30 p.m., at which time they left the lounge and took a taxicab presumably to attend a party. She noticed that the cab driver, who had told them hé was unfamiliar with the area, seemed to be taking them in the wrong direction. The defendant then said, “They are just trying to take our money.” He next gave the driver other directions and then ordered him to stop. At this point the defendant put a gun through an opening in the partition between the front and back seats and shot the driver in the head. Thе defendant proceeded to climb into the front seat where he searched the driver. Hearing the driver moan, he returned to the rear seat where he shot the driver twice more in the same fashion. He went back to the front seat and handed Piper some articles, including a money clip which he had taken from the driver. On seeing a man emerge from the building in front of which the cab was pаrked, the defendant said he would kill him also but, on Piper’s protest, agreed not to do so, saying, “All right, but I don’t need no witnesses.” The man who had left the building got into a car and drove up beside the cab. There was a short conversation between the two men, after which the second man left. Piper and the defendant then took another cab to Louie’s Lounge, where the defendant *456 wiped blood off his clothes and Piper’s. Piper gave the defendant the articles taken from the driver. He returned the money, twenty-six one dollar bills, and left the lounge temporarily, saying he intended to dispose of the other items. Later in the evening Piper divided the money evenly with the defendant. After leaving Louie’s Lounge, Piper and the defendant went to another bar, from there to the home of Piper’s brother, аnd finally to the defendant’s apartment. A few days later the defendant said to the witness that she “had seen him wipe somebody off the face of the earth and that he would do the same thing to . . . [her].”
There was also evidence from one Otis B. Cash, Jr., who testified that he was at the location described by Piper as the scene of the shooting that night, heard gunshots, and had a discussion with a man in a taxicab whom he identified as the defendant. Cash stated that there was a woman in the back seat and a man slumped over in the driver’s seat and that the defendant had told him that all three had been to a party. There was further evidence that the body of Robert G. Foster was found in the taxicab he operated at the same location that evening. There were three gunshot wounds in the body, one in the hеad and two in the neck. There was expert testimony that a fingerprint found on the door handle of the taxicab was that of the defendant.
The defendant testified that he had spent the evening at the Shanty Lounge with Piper and that while there he had consumed a cup of black coffee. Shortly after finishing the coffee, he began to hear buzzing sounds, saw flashing lights and shadows, and felt an aching in his head. He recalled leaving the lounge with Piper in a taxicab but remembered nothing further until he was in Louie’s Lounge later that night. The defendant also presented expert psychiatric evidence that the symptoms described by the defendant were consistent with a reaction to LSD. There was rebuttal testimony by an expert psychiatric witness for the Commonwealth who had examined the defendant on Aрril 2, 1971. He stated that at that time the defendant had told *457 him that he remembered the events of the night in question but that he had felt drugged. In response to a hypothetical question, this witness testified that the actions of the defendant alleged by the Commonwealth appeared to be purposeful and not a toxic reaction.
The defendant argued three assignments of error. We discuss each.
1. Error is аlleged in the excusing for cause of prospective jurors because of their answers to questions on their opinions on the death penalty. Since the case was tried prior to the decision of the Supreme Court of the United States in
Furman
v.
Georgia,
The principal argument of the defendant is that, in excluding those potential jurors
1
who on voir dire revealed opinions which they felt would preclude them from a finding of guilty even if otherwise convinced by the evidence beyond a reasonable doubt, the resulting jury was “conviction-prone.” A similar argument has been made before the Supreme Court of the United States. In
Witherspoon
v.
Illinois,
*459 The questions put by the trial judge to the veniremen in this casе dealt not with their general attitudes toward capital punishment but with the influence of those attitudes on their ability to appraise the evidence fairly. The trial judge explained to each potential juror the alternative punishments possible for murder in the first degree and then inquired substantially as follows: “If you should be sworn as a juror in a case where the penalty might be death and you should be convinced by the evidence beyond a reasonable doubt of the guilt of the defendant, have you an opinion that would prevent or preclude you from doing your sworn duty of finding a defendant guilty?” 2 This formulation, taken largely from G. L. c. 278, § 3, does not exclude any juror merely because of his attitude on the death penalty. It is entirely possible that a potential juror might have deeply held conscientious scruples against capital punishment and still be able to answer honestly the quoted question in the negative. The judge’s questioning was carefully directed only at the ability of the potential jurors to act objectively on the basis of the evidence. In fact the judge declared indifferent two, and possibly three, potential jurors who expressed personal opposition to the death penalty but who believed they could fairly judge the evidence notwithstanding those opinions. 3 In the case of each juror excused for cause, the judge took pains to assure that the attitudes expressed were more than just personal convictions and that they would interfere with the jurors’ capacity to perform their duty. 4
*460 It may be argued, of course, that although the inquiries made did not exclude jurors who were opposed to the death penalty, they did eliminate those whose opposition was strongest and that the resulting jury was still skewed toward conviction if there is a correlation between death penalty attitudes and the tendency to convict. We do not agree.
First, we are not persuaded that the empirical studies proffered by the defendant provide much more cogent evidence than that which the Supreme Court found lacking in the
Witherspoon
case. Three “new” studies are cited by the defendant.
5
Two of these have already been brought to
*461
our attention when the same argument was made to us in
Commonwealth
v.
Bumpus,
Secondly, even if the tendency asserted by the defendant were proven, the injury to the neutrality of the jury which would result from the procedure followed in this case would be insubstantial and certainly not constitutionаlly significant. By excluding only those potential jurors whose opinions are such as to preclude a finding of guilty, an exceedingly small number are eliminated. These exclusions are, moreover, balanced by others when, as here and pursuant to our suggestion in
Commonwealth
v.
Ladetto,
The fundamental difficulty with the defendant’s contention, however, is that, were it to prevail, it would mean
*462
that a trial judge would be unable to prevent the empanel-ling of a jury which he knew from the outset would be incapable of arriving at a verdict of guilty. Since unanimity is required for conviction, and since a judge would be forbidden from excusing jurors who declared an intention never to agree to a guilty verdict regardless of thе evidence, the entire trial would be a fruitless exercise. “The .. . jurors in question were excluded because they did not stand indifferent, not because they had views or opinions for or against particular kinds of punishment. Neither party has the right to insist that such persons be allowed to serve as jurors.”
Commonwealth
v.
Mangum,
The defendant has cited no case in any jurisdiction in which a court has accepted his thesis, and our research has discovered none. The cases to the contrary are legion. Besides the Massachusetts cases cited, a few of the more recent are:
United States
v.
Marshall,
2. During cross-examination of the defendant, the prosecutor read into the record part of a certified copy of a record of a 1961 conviction оf one James McAlister for operating a motor vehicle without a license. The apparent purpose of this proposed evidence was to impeach the credibility of the defendant who had testified that he had never driven an automobile. The defendant argues that the reading of this record was prejudicial error because the offence involved was a misdеmeanor which occurred more than five years before defendant’s testimony, and the prosecution made no showing that the defendant had been convicted of a crime
*463
within five years prior to the time of testifying. G. L. c. 233, § 21. He further charges error in that the prosecutor did not establish that the defendant was the same James McAlister named in the conviction record.
Ayers
v.
Rat-shesky,
3. The defendant next argues that it wаs error for the judge to refuse to give a requested instruction to the effect that the defendant could not be found guilty if the jury found that at the time of the offence he was suffering from a mental disease or defect depriving him of the substantial capacity either to appreciate the criminality of his conduct or to conform his conduct to the requirements of the law if that disease оr defect was the result of involuntary intoxication. We believe that the judge’s charge on this point was adequate.
The judge first pointed out the defendant’s implied contention that he was not responsible for his acts because of the sensations experienced from some drug that had been placed in his coffee without his knowledge. He next properly noted that voluntary intoxicаtion would provide no defence except possibly to negate an inference of deliberate premeditation in a case of murder in the first degree.
*464
Commonwealth
v.
McGrath,
4. Pursuant to our responsibility under G. L. c. 278, § 33E, we have carefully reviewed the entire record and are satisfied that the defendant received a fair trial and that the verdict of murder in the first degree was supported by weight of the evidence.
5. Since there was no recommendation that the death sentence not be imposed and the case was tried prior to
Furman s. Georgia,
So ordered.
Notes
Our reading of the transcript of the voir dire indicates that three potential jurors were excused for cause as a result of answers to the questions put as to their opinions on capital punishment. Exceptions were taken, but the defendant’s assignment of error on appeal mentions only one such case, although there is transcript reference in the assignment to another. In any case, pursuant to our broad duty to review the entire case in capital cases, wе have considered all three exclusions. G. L. c. 278, § 33E.
Commonwealth
v.
McCauley,
The quoted passage was given to juror No. 402. Substantially similar questions were put to the two others.
Two of these jurors were peremptorily challenged by the Commonwealth.
The following colloquy between the judge аnd juror No. 428 was typical of his examination of all three excused jurors.
Q. “Now, if you were chosen as a juror to sit on a capital case, having in mind those possible verdicts, have you an opinion which prevents you from doing your sworn duty of finding the defendant guilty?”
A. “I don’t believe I would under those conditions.”
Q. “Now, tell me why you feel that way.”
A. “If the situation were to progress to a state where it was an either/or situation, I don’t think I could go to the latter two punishments.”
*460 Q. “How deep rоoted is this feeling of yours concerning the death penalty?”
A. “Fairly deep.”
Q. “Well, in what period of time have you developed this opinion or entertained it?”
A. “Well, seriously over the last five years where I have been able to maintain, how should I say, a valid opinion.”
Q. “Would it make any difference to you iff told you that it was the law of the Commonwealth that such a sentence could be imposed as the dеath sentence?”
A. “No. I believe you when you say there is a law to that extent, but I don’t necessarily have to agree with it.”
Q. “Would that change your mind if! told you it was the law? In other words, I gather that you don’t believe in capital punishment.”
A. “No.”
Q. “Am I right about that?”
A. “You are right about that.”
Q. “Well, what if it was the law of the Commonwealth, would that change your mind any?”
A. “What type of law?”
Q. “If it was the law of the Commonwealth that such a sentence could be imposed, would that change your mind any?”
A. “No, not necessarily. The law is the law, and you know, it doesn’t matter.”
Q. “If you were sitting as a juror, is your feeling so deep rooted that you could not follow the law in that case?”
A. “No, I don’t believe I could.”
The judge: “You are excused, Mister. You may step down.”
Bronson, On the Conviction Proneness and Representativeness of the Death-Qualified Jury: An Empirical Study of Colorado Veniremen, 42 U. of Colo. L. Rev. 1 (1970). Jurow, New Data on the Effect of a Death Qualified Jury on the Guilt Determination Process, 84 Harv. L. Rev. 567 (1971). White, The Constitutional Invalidity of Convictions Imposed by Death-Qualified Juries, 58 Cornell L. Rev. 1176 (1973).
