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Fig. 37 — Dried ox lungs; change:; in weights of pigeons fed. 



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Fig. 3S— Dried lamb lungs; changes in weights of pigeons fed. 



TESTS WITH CALF PANCREAS AND HOG PANCREAS. 



In Table 24 are presented the results of the feeding tests with calf 

 pancreas and hog pancreas. Calf pancreas appears to have a rather 

 low antineuritic value. The rations containing 15 and 25 per cent, 

 respectively, of the tissue had practically the same value, the average 

 survival period and the loss in weight being practically the same for 

 the two pens of pigeons getting these rations. 



Hog pancreas appears to have a slightly higher antineuritic value 

 than calf pancreas. The pigeons that were fed the ration containing 

 15 per cent of hog pancreas showed an average survival period of 29 

 davs and a loss in weight of 23.2 per cent; while the birds that received 

 2 5 "per cent of hog pancreas in their food showed an average survival 

 period of 41 days and a loss in weight of only 9.6 per cent. Two 

 birds receiving this ration were in good condition at the close of the 

 test on the fifty-fifth day. 



The changes in the weights of the pigeons during the test are shown 

 in Figures 39 and 40. 



