vicinity of the female generating organs, causing pressure, thus 

 restricting the flow of blood. What corn, as a food lacks, muse be 

 provided for in some other form. 



The organic phosphorus as it occurs in the egg is chiefly in the 

 form of lecithin. This compound is sometimes prescribed as medi- 

 cine in cases of rickets and nervous exhaustion. In the digestion 

 process of this compound phosphorus is absorbed as glycero-phos- 

 phoric acid. The function of lecithin is not understood. The opinion 

 of many experimenters in physiological chemistry is that the phos- 

 phorus of lecithin has a value as a nutrient that it has not in other 

 compounds as a stimulent to growth. Inorganic phosphates are 

 easily digested and assimilated. There is a difference of opinion as 

 to whether the inorganic phosphates are useful in the building up 

 of organic phosphorus compound in animal body. 



It has been shown that bone meal and bone flour fed to pigs 

 had the effect of strengthening the bones 1 . 



According to Bulletin of Ohio 2 the principal need of phosphorus 

 in the body is for inorganic phosphorus; organic phosphorus can 

 supply the bodily needs for phosphorus, both organic and inorganic, 

 provided the necessary bases are present. 



Purpose 



To study the effect of feed stuffs, those rations that have a high 

 organic phosphorus content versus rations having low organic con- 

 tent. 



To determine if possible whether the phosphorus in the inor- 

 ganic form is metabolized or not. 



The effect of a feed high in organic- phosphorus coupled with a 

 grit low in inorganic phosphorus. 



A feed low in organic phosphorus coupled with a grit high in 

 inorganic phosphorus. 



The nutritive plan of the ratio lo be maintained the same. 



Experimental Method 



The feed to be carefully analyzed for organic and inorganic phos- 

 phorus. 



The eggs to be analyzed both before and during the feeding, at 

 uniform periods for organic and inorganic phosphorus. 



1. Ball. 81, Mo. Agr. Exp. Station. 



2. Bull. 201, Ohio Agr. Exp. Station. 



