PLATE 29 



A-B. — A cow (No. 563) and her calf, showing the effect of a ration of com grain, 

 com stover, sulphuric acid, and phosphoric acid. The ration was acid, and the urine 

 produced was acid to litmus. The ammonia production in the luine was very high, 

 yet the ration was physiologically perfect, and normal, strong offspring resulted. 

 Note the good condition of both mother and calf. 



C. — The calf of cow 642, showing the effect of a ration of wheat grain, wheat gluten, 

 com stover, and butter fat. A generous supply of fat-soluble A was not alone sufficient 

 to make a ration rich in wheat grain always successful for reproduction. Such results 

 as this make it clear that disaster with the wheat grain was not due to a deficiency 

 but to a toxicity. The calf was bom dead. 



D-E. — A cow (No. 653) and her calf, showing the effect in 1915 of a ration of wheat 

 grain, wheat gluten, com stover, and butter fat. In this case successful reproduction 

 resulted; but the fact that without the butter fat the ration was often successful illus- 

 trates the principle of individual resistance to the wheat toxicity, at least for a time. 

 The calf was born strong. (See PI. 24, A-B.) 



