One which arises in consequence of some human agency, without any intention, or which happens by some natural cause, without human agency. 2. Whether a fire arises purely by accident, or from any other cause when it becomes uncontrollable and dangerous to the public, a man may, in general, justify the destruction of a house on fire for the protection of the neighborhood, for the maxim salus populi est suprema lex, applies in such case. 3. When real estate is let, and the tenant covenants to pay the rent during the term, unless there are proper exceptions to such covenants, and the premises are afterwards destroyed by fire, during the term, the rent must be paid, although there be no enjoyment; for the common rule prevails, res perit domino. The tenant, by the accident, loses his term, the landlord, the residence.