344 



MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



The temperature was determined by a mercury thermometer placed in the axilla. As has 

 already been stated, it was found that the thermometer reached as high a point in 10 minutes as 

 in 15 or 20 minutes. The most of the temperatures, therefore, were made after the thermometer 

 had been in place about 10 minutes. It was our belief at the outset that the body temperatures 

 as thus taken are not perfectly accurate, and this belief has been confirmed by observations with 

 an electrical rectal thermometer, since devised for continuous and accurate observations of 

 internal body temperature. a While these axillary determinations of body temperature are not 

 entirely accurate, the later observations with the electrical thermometer lead us to believe that 

 the daily curves for the two are nearly parallel. 



In previous experiments an hygrometer had been placed in the chamber, and readings with 

 dry and wet bulb were taken at frequent intervals. Inasmuch, however, as these readings were 

 not used in the computations of results, and it is desirable in rest experiments to avoid all unnec- 

 essary exertion, even that of rising and reading the hygrometer, these observations were not 

 made in the experiments of 1900. 



Table LXI. — Summary of the diary — Metabolism experiments Nos. 26-28. 



"See p. 273. 



