BASAL METABOLISM. 



115 



L. E. E. of 6j years. With none of the subjects were values obtained 

 for every month in the year. The primary object in giving these 

 average values is to note if there is a tendency for the metabolism to 

 be distinctly higher at one season than another. 



TABLE 46. Average oxygen consumption in different months of the year in respiration experi- 

 ments without food. 1 (Values per minute.) 



l Thia table includes all subjects on whom experiments were made during a period of at least 



1\ months, the longest period being 6| years with subject L. E. E. 

 2 See explanation of this high value on page 103. 



Examining the data for differences from month to month, we find 

 that with H. H. A. the minimum of 200 c.c. occurs in November and 

 that the maximum of 220 c.c. is found in March, with a difference of 

 10 per cent. In this particular case, therefore, the basal value deter- 

 mined in November can not properly be used for studying small incre- 

 ments measured in March. It does not follow, however, that we 

 should invariably expect with H. H. A. a low metabolism in November 

 with a higher metabolism in March. 



With the subject K. H. A. the variations are extremely small; the 

 minimum value (230 c.c.) was found in February and the maximum 

 (249 c.c.) in March. With F. G. B. a minimum of 243 c.c. was found 

 in May and a maximum of 268 c.c. in April; with J. J. C. a minimum 

 of 218 c.c. in May and a maximum of 235 c.c. in January and March; 

 with T. M. C. a minimum of 176 c.c. in July and a maximum of 191 c.c. 

 in November. The values for A. G. E. are practically constant for the 

 5 months during which he was measured. With L. E. E. a minimum 

 of 237 c.c. was obtained in July and a maximum of 263 c.c. in Novem- 

 ber; with H. L. H. a minimum of 233 c.c. in June and a maximum 

 of 264 c.c. in September; with P. F. J. a minimum of 219 c.c. in 

 July and a maximum of 251 c.c. in April; with Dr. M. a minimum 

 of 232 c.c. in June and a maximum of 290 c.c. in April; with J. K. M. 



