Ronald Schwager was charged with murder in the first degree and convicted of manslaughter in the death of Frank Heinrich. He appeals that conviction claiming error of the district court in refusing to present to the jury his offered instruction on the defense of insanity as that defense defined and included irresistible impulse. We find no error and affirm the judgment.
On the evеning of June 25, 1977, around 8:00 p. m., police officers responded to a call for assistance at 1000 Christine Circle, Cheyenne. Upon their arrival at that address they found the defendant, Ronald Schwager, on the roadway, waving his arms to signal to them. Their investigation discovered the body of Heinrich, dead of gunshot wounds in his right side. Schwager pleaded not guilty and not guilty by reason of insanity.
At trial conference, when the instructions were discussed, the defense offered Instruction 1A, the substance of which is noted below. Defense counsel stated to the court that the instruction was offered concerning Mr. Schwager’s ability to conform his conduct to the requirements of the law. Legal basis for the instruction was claimed tо be
Reilly v. State,
Wyo.,
It is the law in Wyoming that no error may be assigned to the giving or failure to give an instruction unless that party objects thereto bеfore the jury retires to consider the verdict. In addition, the objecting party must specifically state the grounds for his objection. Rule 51, W.R. C.P.;
Leitel v. State,
Wyo.,
Here, we find that the objеction was sufficient. Counsel cited his legal authority and explained the purpose for his offer. He stated the thеory of the instruction in terms of the defense of the case. The policy of our rules is designed to apprise and inform the trial court of the purpose of the instruction and the legal reason it is offered to allow for correction before submission to the jury. We feel that here the trial court was sufficiently informed of the specific lеgal reasons that the instruction was offered and the objection was proper.
We distinguish the cases cited аbove that declined review on this ground. In
Lei tel v. State,
supra, counsel simply took “exception” to the denial. In
Reeder v. State,
supra, the defense offered an instruction on defense of habitation thаt this court found was unwarranted by the evidence. Objection to the denial was only that failure of the court to give thе instruction was not in “ ‘conformity with the laws of the State of Wyoming,’ ”
The instruction offered by the defense and refused by the trial court stated:
“You are instructed that the concеpt of a person not being able to conform his conduct to the requirements of the law is the same as saying that he acted with an irresistible impulse. The Prosecution must prove beyond a reasonable doubt that the defendant could conform his conduct to the standard of law and did not act with an irresistible impulse.”
The statute that establishes аnd defines this defense excuses responsibility for criminal conduct if at the time of the act, “as a
result of mental illness or deficiency
he [the acсused] lacked substantial capacity either to appreciate the wrongfulness of his conduct or to conform his conduct to the requirements of law.” Section 7-11-304, W.S.1977 (Ch. 191, § 1, S.L. of Wyoming 1975). The defect in the proposed instruction is clear. It does not contain the necessary causative element of mental illness or mental deficiency, and no construction is possible to save the omission. Although we have found no Wyoming cases that decide this point,
Dodge v. State,
Wyo.,
The denial of the prоffered instruction was proper. We note that an instruction on the defense was given which in the absence of оbjection was sufficient.
The judgment of the trial court is affirmed.
Notes
. Daniel M’Naghten case, 10 Cl. & Fin. 200, 8 Eng.Rep. 718 (1843).
. The relevant exchange between the defense and the court is set out:
“MR. CHAPMAN: ... I have onе further instruction to offer, Your Honor, concerning the concept of a person being able to confоrm his actions to the standard of law. It’s based on the case of Wyoming — of Reilly vs. The State of—
“THE COURT: Could you give me a citation?
“MR. CHAPMAN:496 P2d, 899 ; Wyoming, 1972, and it refers to two cases which consider the irresistable [sic] impulse and uncontrollable act as the same as the Wyoming McNaughtоn [sic] Rule. This modification has been suggested by the Supreme Court for inclusion to the charge for the jury.
*1305 “THE COURT: Okay, it pre-dates the law we are working under. Interesting. Let the record reflect that I am marking this instruction as 1-A, defense, and as refused.
“MR. CHAPMAN: Your Honor, I object to the refusal of the instruction by the Court. . . ”
