24A EGYPTIAN AG 



percentage of phosphoric acid ('Oo%) shown in that of 

 the sheep is higher than that given by some authorities. 

 According to these analyses 

 1 ton of bullock urine contains 17*9 Ibs. of nitrogen 



and 3T3 Ibs. of potash. 

 1 ton of horse urine contains 26*8 Ibs. of nitrogen and 



33*6 Ibs. of potash. 

 1 ton of sheep urine contains 31'3 Ibs. of nitrogen and 



44*8 Ibs. of potash. 



M 11111*0 * states that on an average 1 ton of the urine of 

 the cow, horse, and sheep, contains respectively 30, 36 

 and 38 Ibs. of nitrogen. 



From what has preceded we may say : 



1. That in passing through the body of the animal, only 

 a very small proportion of the original nitrogen, phosphoric 

 acid and potash present in the food is retained ; theoretically 

 therefore, the manure should contain a large proportion 

 of the fertilising matter which the original food did. 



2. Taking the total amount of solid and liquid matter 

 excreted, the latter (that is urine) contains more nitrogen : 

 not only so, but the nitrogen in the urine being in a soluble 

 state is the more valuable. The amount of nitrogen voided 

 by an animal in the form of urine is much greater than 

 that in the solid excrement. 



3. Phosphoric acid is chiefly found present in the solid 

 excreta, very little being present in the urine. 



4. Potash is chiefly found in the urine. A glance at 

 the figures showing the relative amounts of the valuable 



<l 'M; 



