The Temperature and Humidity Relations of the Cockroach (Blatta Orientalis)

In a series of studies, of which this is the first, I propose to bring experimental methods to bear upon the relation between a convenient insect—Blatta orientalis— and some of the physical factors in the environment—namely temperature and humidity. The cockroach is very susceptible to desiccation (Zabinski, 1929; Gunn, 1931), and this paper is concerned with the relation between the speed of desiccation and the dryness of the air1 at various temperatures.