AGRICULTURAL TEXT-BOOK. 



Silica, . - IB 189 



Sulphuric acid, . . 16 



Phosphoric acid, . - 32 



Chlorine, . . 15 



547 



The Nitrogen amounts to 1.G5 equal to 2 per cent of Ammonia ; the 

 fat, wax, or oil to 3.8 ; and the starch, gum, dextrine, and pectine to 50 

 per cent, the rest being woody fibre and wa-te. 



389. Liebig gives the following summary analysis of &quot; Hay :&quot; 



100 parts of hay dried in the air contain 86 of dry matter. 



14 of water. 



100 



100 parts of hay dried at 212F.=:11G.2 dried in air contain: 

 Carbon, - . 45, 



Hydrogen. . 5.0 



Oxygen, - 33.7 



Nitrogen, - - 1 5 



Ashes, - - 9.0 



100.0 



300 Ibs. of hay dried at the ordinary temperature contain 1.29 nitro 

 gen. 



240 oz. of such hay=rl5 Ibs. contain 3.095 oz. of nitrogen. 

 72 oz. of oats, =4} Ibs. contain 1.34 oz. of nitrogen. 



4.435 



390. Prof. TVay has given the water (A,) and flesh forming constitu 

 ents (B,) of the following grasses, in 100 parts. 



A. B. 



Sweet-scented Vernal grass, - 80.35 - - 2.05 



Orchard grass* - - 70 4.06 



Meadow barley, 58.85 - - 4.59 



Timothy, 57.21 - 4.86 



391. The following principles may be laid down, (a,) The 

 proportion of soluble matter yielded by any species of grass, 

 when made into hay, varies not only with the age of the grasses, 

 when cut, but with the soil, the climate, the season, the rapidity 

 of growth, the variety of seed sown, and with many other cir 

 cumstances which are susceptable of constant variation. (I,) 



