CLIMATIC INFLUENCE ON THE GROWTH OF THE MALE ALBINO MOUSE

Abstract

The conditions of this expt. have been described previously. Mice kept constantly in a cold room (60-68[degree] F) increased in body wt. and body length at practically the same rate as mice in control room (70-80[degree] F). However, these cold rm. mice had tails fully 1 cm. shorter than those of the control rm. mice. Those animals subjected to moist heat (88-92[degree] F and rel. humidity 75%) had short slender bodies, the tails of each being 1 cm. longer than the body. A changeable environment retarded the growth of mice, but, at a late age, such animals attained both great body and tail lengths.