The Evaporation of Water from the Cockroach

Abstract

ABSTRACT The effects of temperature, humidity and wind velocity upon the rate of evaporation of water from the cockroach Periplaneta americana have been studied. The effects of these factors upon the rate of evaporation from the tracheal system are shown to be similar to their effects upon purely physical systems. The effects of these factors upon the rate of evaporation from the body surface are shown to be complicated by the presence of a film of fatty substance which undergoes a change of state at about 30° C.