Journal of Agricultural Research voi. xxn. no. i 



1 



Figures i to 7 have indicated that velvet beans are detrimental to 

 young experimental animals when fed at an 80 per cent level. The 

 experiment on which figure 8 is based corroborates that fact. Although 



60 



Fig. 3. — Gain in weight of lot 53 on ration of velvet beans, 40 per cent; butter fat, s per cent; No. 3a 

 salts, 4 per cent; casein, 9 per cent; and dextrin, 42 per cent. The dextrin carried alcoholic extract of 

 10 gm. ether-extracted wheat embryo. Y indicates point at which young were littered. 



when 80 per cent velvet beans served as a source of the fat-soluble 

 vitamin, two animals made a fair amount of growth for a period of four 



SO 

 60 

 SO 



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Fig. 4.— Gain in weight of lot 61 on ration of velvet beans, 80 per cent; butter fat, 5 per cent; casein, s 

 per cent ;and dextrin, 10 per cent. The dextrin carried alcoholic extract of 10 gm. ether-extracted wheat 

 embryo. 



months; two rats died after six weeks. The failure of these two ani- 

 mals can not be ascribed to the low concentration of the fat-soluble 

 vitamin in the seed, since lot 70 (fig. 11) made normal growth for a period 



