... at first enjoy increased strength, vigour and appetite; later, however, the opposite effect is produced and intenbe debility supervenes. In addition, caisson workers suffer from a series of troubles which are known as accidents of decompression. (See CAISSON DISEASE.) But, therapeutically, compressed air has been utilized by means of pneumatic chambers large enough to hold one or more adults at the time, in which the pressure of the atmosphere can be exactly regulated. This form of treatment has been found of much value in the treatment ... — Project Gutenberg Encyclopedia