Baths are arranged thus: - The very cold bath, when the temperature of the water is below 50 deg. ; the cold bath, above 50 deg.; the cool bath, from 60 to 75 deg. ; the temperate bath, from 75 to 85 deg.; the tepid bath, from 85 to 92 deg.; the warm bath, from 92 to 98 deg.; the hot bath, from 98 to 112 deg. The most useful bath is " the warm bath," but the temperature must be varied in accordance with the different constitution of each patient.