WEIGHT OF THYROID GLAND ON BODY WEIGHT 



97 



been determined by formulas (20), (20 a), and (20 b). The data 

 are for both sexes combined. Chisolm ('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 



18. 



10. 



Chart 17 Showing the weight of alimentary tract of the male albino rat ac- 

 cording to body weight. The observed weights are represented by 112 (Jackson) 

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

 weight. Table 70, formula (21). 



• Observed weight. Calculated weight. 



pressure on the small intestine — exerted from above down- 

 wards — 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 17 and the values in table 70 were determined by formula 

 (21). Hatai ('13); and Jackson ('13). 



Weight of the thyroid gland on body weight. Technic: Sev- 

 eral minute muscles nearly the color of the gland must be re- 



