THE STATUS OF PHOSPHORUS IN CER- 

 TAIN FOOD MATERIALS AND ANIMAL 

 BY-PRODUCTS, WITH SPECIAL REFER- 

 ENCE TO THE PRESENCE OF INORGANIC 

 FORMS* 



E. B. HART AND W. H. ANDREWS. 



SUMMARY. 



(i) Our commercial feeding stuffs of vegetable origin do not 

 contain appreciable quantities of phosphorus in inorganic combi- 

 nation. 



(2) The animal feeding materials, such as liver meal and dried 

 blood, when representative, are also approximately free from this 

 form of phosphorus. Commercial meat meal, liable to carry varying 

 quantities of bone, does contain inorganic phosphorus dependent, of 

 course, on the amount of bone present. The feces of a cow which 

 were examined were also free from inorganic phosphorus. 



(3) Germinated grains are rich in forms of soluble organic 

 phosphorus. 



(4) Germination, extending over a period of two weeks, of oats, 

 corn and wheat, did not transform organic phosphorus into inor- 

 ganic forms. 



*A reprint of Bulletin No. 238. 



