THE COMMUNICABLE DISEASES 
523 
point around 97.5° F. From these charts and other rec- 
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temperature curve with its high point at three PM. and its 
low point at three AM., there is in them not by any means 
the regularity of curve to be found in Cercopithecidae and 
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Chart B. CHIMPANZEE (Pan niger). Non-tubercuIou8 at death. 
Cebidae. Our records of temperatures in the Hylobates 
(Gibbons) are not extensive enough to quote but what we 
have approach those of the lower monkeys. 
Graphic curves of the normal temperatures of the 
various genera of Cercopithecidse and Cebidse present 
striking similarities in the regularity with which the 
daily rhythm is performed. In the seven genera of which 
we have accurate records the normal high points fall 
between 102°-103° F. and the low points between 
99°-100° F. while the curve of the four-hourly steps is 
