146 



THE CHEMISTRY OF THE FARM 



composition from the digested; the undigested albu- 

 minoids contain phosphorus, and are partly composed 

 of nuclein. 



The ready-formed sugars, and the starch of foods, 

 are usually completely digested. 



(2) Experiments with Horses. — In experiments con- 

 ducted by Wolff the digestive powers of the horse and 

 sheep have been accurately compared, the same food 

 having been supphed to each animal. The principal 

 results were as follows : — 



DIGESTION OF HOESE AND SHEEP COMPAEED. 

 EXPERIMENTS WITH HORSES. 



* These results are the mean of a few experiments. 



On comparing these figures it is evident that a horse 

 digests meadow grass and hay less perfectly than a 

 sheep, and the difference between them is apparently 

 as great when the food is young grass as when ordinary 



