On January 19, 1970, the defendant was indicted by a grand jury for the crime of murder in the first degree. On a trial to a jury, the defendant was found guilty of the crime of the lesser included offense of murder in the second degree and the court, after denying the defendant’s motion to set aside the verdict, sentenced the defendant to life imprisonment. The defendant has appealed to this court, assigning eight claims of error but briefing only three. Assignments of error which are not briefed are deemed abandoned.
State
v.
Williams,
The murder charge arose from the fatal shooting of Alexander Sim of Milford by the defendant, Neis Holmquist. The relevant facts were not in substantial dispute and can be briefly summarized: On November 11, 1969, at approximately 9 p.m., the defendant approached Sim as he was emerging from his automobile and fatally shot him in the face and abdomen with a small handgun. The defendant had been keeping company with Agnes, Sim, the victim’s wife, for some time prior to the shooting. The defendant was seen running from the Sim automobile shortly after sounds, likened to gunshots, were heard coming from the car. During the trial, the defendant did not contest that he had shot Sim but claimed that he should not be held accountable for the killing because of the insanity which had overtaken him at the time of the shooting. In support of his claim, the defendant introduced psychiatric testimony that he had become emotionally unstable, paranoid, overly suspicious and overly jealous. The psychiatrists appearing for the defendant at trial further testified that his personality *142 disorder and mental defect were such that they more likely than not rendered him unable to control his conduct to the extent that he would commit an unlawful killing. There was other testimony, however, from which the jury could reasonably conclude that the defendant on the day in question did not lack substantial capacity to appreciate the wrongfulness of his conduct or to conform his conduct to the requirements of the law, which was the test of insanity to he applied under the law that existed at the time of trial. 1
The defendant first claims that the court erred in refusing to charge the jury on the effect of a verdict of not guilty by reason of insanity. The record discloses that the defendant requested in writing that the trial court charge the jury as follows: “If you find the insanity as well as the guilt of the accused is clear, I instruct you that a verdict of not guilty on the grounds of insanity will subject the accused to such restraint so as to prevent him from doing injury to the person or property of others.” The defendant’s brief contains no authority to indicate that the requested charge accurately stated the law existing at the time of his trial. See
State
v.
Green,
The defendant also claims that the court committed reversible error in its supplemental charge to the jury on the question of the presumption of sanity. To place the supplemental charge properly in context, it is necessary to consider the overall charge pertaining to the burden of proof on the insanity issue. See
State
v.
Crawford,
Basically, the question raised by the defendant is whether it was error for the court to mention the presumption of sanity to the jury once the defendant had produced “substantial evidence” of his insanity sufficient to rebut the presumption, despite the lack of objection by the defendant. Under the circumstances of this case, we cannot agree that the court’s charge was error.
It is well recognized that the terms “presumption” and “rebuttable presumption” have various meanings, depending upon the sense in which the terms are used.
Gaul
v.
Noiva,
The law in Connecticut, however, was stated by this court in
State
v.
Davis,
Whether sanity has thus been raised or put in issue is a question of law to be resolved by the trial judge.
State
v.
Conte,
supra; 1 Wharton, Criminal Evidence (13th Ed.) § 29. Once the determination is made that sanity is in issue, the presumption of sanity “loses all operative effect.”
State
v.
Davis,
supra. “Presumptions which have their basis merely in convenience and serve to bring out the real issues in dispute . . . operate only until the defendant has produced some substantial countervailing evidence . . . and when that has been done they drop out of the case. . . . The same situation exists with reference to the presumption of sanity in a criminal case. It is a convenient device for avoiding the production of evidence as to a matter which in most cases will not present any issue.”
O’Dea
v.
Amodeo,
In this situation, where the presumption of sanity is not evidence but a procedural device which is out of the case once rebuttal evidence is introduced, it would be the better practice to refrain from mentioning it to the jury once the court has determined that sufficient (“substantial”) evidence tending to prove insanity has been introduced. See, e.g.,
United States
v.
Hendrix,
Although it would be preferable for a court to omit references to the presumption of sanity, and simply charge on the state’s burden of proving sanity beyond a reasonable doubt, we cannot say that the trial court’s instructions constituted error.
*151
The court correctly stated the applicable law throughout its charge. The nature of the presumption of sanity was clearly explained. The court adequately indicated to the jury that the defendant had met his threshold requirement of producing substantial evidence of insanity and amply instructed them that the burden was entirely on the state to prove the defendant sane beyond a reasonable doubt. “It is a well-established rule that the charge to the jury must be read as a whole and that individual instructions are not to be judged in ‘artificial isolation’ from the overall charge.
Cupp
v.
Naughten,
We need not discuss at length the third assignment of error briefed by the defendant. After the close of testimony the defendant interrupted the state’s argument to the jury, accused the state’s attorney of not telling the truth, and threw a book at the state’s attorney which struck him in the back. Doctor Marshall Smith, one of the psychiatrists who had testified on the defendant’s behalf at the trial,
*152
was present in the courtroom during this outburst. The defendant, through various motions by his attorney, sought the court’s permission to call Dr. Smith to the stand as a witness so that he might testify concerning the effect which the defendant’s outburst had on the psychiatrist’s opinion as to the defendant’s sanity on the date of the crime. The court denied the motions, and the defendant has pursued his exceptions on appeal. “Whether or not a trial court will permit further evidence to be offered after the close of testimony in the case is a matter resting within its discretion.
State
v.
Levy,
There is no error.
In this opinion the other judges concurred.
Notes
This test is substantially the same as the present one set forth in § 53a-13 of our Penal Code, effective October 1, 1971.
The court’s supplemental charge on this matter was as follows: “Ladies and gentlemen: It has been called to my attention that in one instance when I was discussing with you the question of presumption of sanity, I said, I think, that the law presumes all persons sane unless and until the contrary appears. I may have used that on one or two occasions, perhaps more. Then I went on to say this sentence, which I think I used at least once — may have used more than once —■ ‘That means that in its relation to cases like this, you may assume the accused is sane unless and until evidence is introduced by the defense showing . . . [the mental condition of] the accused.’ ‘Unless and until.’ I should have used in that phrase, ladies and gentlemen, the word, ‘substantial.’ I should have told you this: That all persons accused of crime are presumed sane, and the presumption of sanity may be relied upon by the state, but when substantial evidence tending to prove insanity comes into the ease, the presumption loses all operative value. I didn’t use the word, ‘substantial.’
I did talk about evidence. I am now asking you to take the rule that the presumption the state has lasts until and unless substantial evidence comes in. When that substantial evidence comes in, then the presumption drops out of the case and the state then has the burden, based on all the evidence, to prove the accused legally sane at the time the alleged act is said to have taken place.”
“If I may, I take exception to your Honor’s reference to the change, ‘substantial,’ and you indicated you wanted the jury to take the rule. I don’t think it is a rule. I think it’s a statute itself. Perhaps, by the interpretation under the case law that your Honor referred to, but in your Honor referring to it as, ‘take the rule,’ I think it is error, and I take exception to it.”
