380 



METABOLISM IN THE 



TABLE IIL 



Expressing results of analyses in percentages. 



weight of the active and that of the resting glands reaches 

 even 10 and 13 per cent, respectively. The tables exhibit 

 also a diminution in the solids of the active glands which, 

 calculated on the totals for eight experiments, is equal to 6 

 per cent of the solids from the resting glands. If Experi- 

 ment III be excluded from the totals, the difference in content 

 of solids between the active and resting glands reaches 11 

 per cent; and in Experiment VIII it amounts to 20 per 

 cent. The figures in the first columns in Table III justify 

 the conclusion that in the secreting gland the content of solids 

 undergoes a relatively greater diminution than does the total 

 weight of the gland. The conclusions thus far reached are 

 therefore in accord with those of Heidenhain. On the other 

 hand, the nitrogen found in the active glands is only 1.4 per 

 cent less than in the resting glands. The nine active glands 

 contained 1.40 grams of nitrogen, the resting 1.42 grams, and 

 the saliva 0.14 gram. The averages for the middle columns 

 in Table III show identical figures for the percentage of nitro- 

 gen in the active and resting glands, and the experiments 

 taken separately exhibit nearly as close an agreement These 

 observations, like those of Pawlow, indicate that the secreting 



