Sec. 665. Fire accidentally kindled on one's own land 666. Liability for Spread of fire 667. Proximate cause of injury from spread of fire 668. Fire purposely kindled 669. Fires kindled to clear land 67o. Firing other land.. 671 Statutory liability 672. Fire communicated from locomotives 673. Duty to use approved appliances on locomotives 674. Other neglect than want of approved appliances 675. Evidence of origin of fire 676. Burden of proof of origin of fire.