ABSORPTION FOR PROTEIDS. 



277 



The lymph portions were analyzed in the customary manner, 

 nitrogen being determined by the Kjeldahl method and the 

 proteid calculated from the figures thus obtained. The results 

 are summarized in the accompanying table. 



TABLE OF ANALYSES OF LYMPH. 



The 55 grams of Witte's " pepton " introduced into the 

 stomach contained 7.70 grams of nitrogen. At the end of the 

 experiment unabsorbed proteid containing 4.42 grams nitro- 

 gen was recovered from the stomach. The nitrogen in the 

 " pepton " absorbed thus amounted to 7.70 4.42 = 3.28 

 grams, equivalent to 23.4 grams of Witte's " pepton." Nearly 

 one-half the proteid fed had thus been absorbed ; in Asher and 

 Barbara's experiment about one-third of the albumin disap- 

 peared. In my experiment the total nitrogen in the lymph 

 during the absorption period amounted to 0.374 gram; the 

 nitrogen-content of the starvation lymph (1) calculated for 

 an equal period, would amount to 6 X 0.0609 = 0.365 gram. 

 The difference between these figures 0.0088 gram N = 0.053 

 gram proteid which may be attributed to the proteid ab- 

 sorbed, is insignificantly small in amount, and is far smaller 

 than the corresponding figure obtained by Asher and Barbara 

 with a considerable larger quantity of proteid. Neither the 

 total quantity of lymph collected nor the percentage of proteid 

 present was increased during the six hours of absorption. 



