Smithsonian Report, 1935. — Hurd-Karrer 



1. Normal liver (control). 





2. Liver produced by wheat grown with 2 p. p. m. selenium (as smlium selenate) added to the soil. 



3. Liver of rat fed wheat grown on selenized soil like that producing the grain for the rat in figure 2, but 

 with an application of sulphur at the rate of 1,500 pounds per acre. The liver appears normal in every 

 respect. 



Comparative Development of the Livers of white Rats Fed Wheat Grown 

 ON Selenized Soil With and Without applications of Sulphur 



