(1)  The provisions of section 16 shall apply to a person suffering from disease of the mind caused by intoxication.

(2)  Evidence of such intoxication as would render the accused incapable of forming the specific intent essential to constitute the offence with which he is charged shall be taken into consideration with the other evidence in order to determine whether or not he had that intent.

(3)  Evidence of intoxication not amounting to any such incapacity as aforesaid shall not rebut the presumption that a person intends the natural and probable consequences of his acts.