Nothing is an offence which is done by accident or misfortune and without any criminal intention or knowledge in the doing of a lawful act in a lawful manner by lawful means and with proper care and caution"
Illustration
A is at work with a hatchet the head flies off and kills a man who is standing
by" Here if there was no want of proper caution on the part of A his act is
excusable and not an offence"
71 IPC Limit of punishment of offence made up of several offences
74 IPC Limit of solitary confinement
76 IPC Act done by a person bound, or by mistake of fact believing himself bound, by law
77 IPC Act of Judge when acting judicially
78 IPC Act done pursuant to the judgment or order of Court
79 IPC Act done by a person justified, or by mistake of fact believing himself, justified, by law