DISEASES OF THE UEINAEY ORGANS. 



133 



following table shows the relative proportion of ash and phosphoric 

 acid in wheat bran and in some common farm seeds : 



Ash and phosphoric acid in bran and some common farm seeds. 



Kind of grain. 



Phosphoric 

 a<;id in ash. 



Phosphoric 

 acid in the 



AMieat bran, it will be observed, contains three times as much phos- 

 phoric acid as is found in any of the other grains, and four times as 

 much as oats, beans, peas, or rye; so that if fed in excess it will 

 readily overcharge the urine with phosphates. 



There is another point to be considered, however, in estimating this 

 danger. Wheat bran contains a far greater amount of albuminoids 

 and other nitrogen-containing constituents than the common grains 

 (these being made up mainly of starch, which contains no nitrogen) ; 

 and, all nitrogen-bearing products contained in the blood and tissues 

 being expelled from the body mainly through the kidneys in the form 

 of urea and (in cattle) hippuric acid, it follows that the excess of 

 urea formed when such food is consumed must load the urine with 

 solids and bring it constantly nearer to the point of saturation, when 

 such solids (or the least soluble of them) must be deposited. 



The following table will show the relative amounts of the nitrogen- 

 bearing products in wheat bran and some of our common grains: 



Nitrogenous matter in wheat hran and some eonrtnon farm seeds. 



