FROST

is the visible frozen vapor found on exposed surfaces, It can only occur when surface temperature falls below 32° F., the freezing-point of water. —Frostbite, gangrene, or death of a portion of the ti ues of the body, due to severe cold stopping the circulation in a part, especially of the extremities, or to inflammation through sudden thawing of a frozen part. The frozen are thawed very graduall y, or, if parts gangrene has already occurred, the dead portion is kept free from. organisms by weak carbolic dre ings, till it separates and healing takes place.