Abstract
COMPARATIVE STUDIES OF HEAT PRODUCING AGENTS The purpose of these experiments was to establish the relative penetration value on eyes and ears of the heat producing agents commonly used. Hot wet dressings, lamps of various sorts and diathermy were studied in this connection, to determine the comparative value of conductive, convective and conversive heat. The tolerance of the skin and the subcutaneous tissues for heat and diathermy were determined clinically, and the limits noted were used as guides for animal experimentation. <i>Eye Experiments</i>.—Anesthetized dogs were used for the following experiments: 1. Through an incision 1 cm. lateral to the external canthus, a pocket was made to the fundus of the orbit by blunt scissor dissection and an electrical, or mercurial, thermometer was inserted deeply and fixed with ligatures, etc. 2. Through another similar skin incision, the equator of the globe was exposed and a small incision was
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