214 



GROWTH OF PARTS AND ORGANS 



(MS '14). The graph in chart 37 and the values in table 146 have 

 been determined by formulas (22), (22 a), and (22 b). The data 

 are for both sexes. Chisohn ('13) ; Jolly and Stini ('05). 



The weight of the alimentary tract on body weight. Technic: 

 The digestive tube from the level of the diaphragm to the anus 

 was removed in its entirety the pancreas, mesentery and small 

 masses of fat being left adherent. The stomach and the large 

 intestine were cut open and the contents removed while gentle 



Chart 38 Showing the weight of alimentary tract of the male albino rat 

 according to body weight. The observed weights are represented by 112 (Jack- 

 son) rats below 50 grams in body weight, and 82 (Wistar) rats above 50 grams in 

 body weight. Table 146, formula (23). 



Observed weight. - - Calculated weight. 



pressure on the small intestine exerted from above downwards- 

 served to expel what it contained. The records are based on one 

 series examined by Jackson ('13) and another series from The 

 Wistar Institute colony. All are males. The graph in chart 38 

 and the values in table 146 were determined by formula (23). 

 Sexes combined. Hatai ('13) ; and Jackson ('13). 



