When there is a question whether a particular act was done, the existence of any course of business, according to which it naturally would have been done, is a relevant fact.
Illustrations
(a) The question is, whether a particular letter was despatched.
The facts that it was the ordinary course of business for all letters put in a certain place to be carried to the post, and that particular letter was put in that place are relevant.
(b) The question is, whether a particular letter reached A. The facts that it was posted in due course, and was not returned through the Dead Letter Office, are relevant.
Section 11 When facts not otherwise relevant become relevant
Section 12 In suits for damages, facts tending to enable Court to determine amount are relevant
Section 13 Facts relevant when right or custom is in question
Section 14 Facts showing existence of state of mind, or of body, or bodily feeling
Section 15 Facts bearing on question whether act was accidental or intentional
Section 16 Existence of course of business when relevant
Section 19 Admissions by persons whose position must be proved as against party to suit
Section 20 Admissions by persons expressly referred to by party to suit