A in a moment of delusion thought that has only son was a tiger and he assailed him with an axe, thinking by reason of mistake of fact, that he was justified in destroying the deceased whom he did not regard to be a human being but who, as he thought, was a dangerous animal.
 

A was awakened in the night by strange noises in his house ; thinking that he was attacking a burglar, he ran his sword through a cabinet where the intruder was hiding and killed a friend of his servant present by the latter’s invitation.

A, a rail conductor forcibly ejects a passenger believing that the passenger has not paid his fare. The passenger persistently refuses to pay or to show his ticket.