Send immediately for medical assistance, blankets and dry clothing, but proceed to treat the patient instantly on the spot, in the open air, whether on shore or afloat.

The points to be aimed at are, first and immediately, the restoration of breathing and the prevention of any further diminution of the warmth of the body; and, secondly, after breathing is restored, the promotion of warmth and circulation.

The efforts to restore breathing, and to prevent any further diminution of the warmth of the body, must be commenced immediately and energetically, and must be persevered in for several hours, or until a medical man has pronounced life extinct. Efforts to promote warmth and circulation must be deferred until natural breathing has been restored.