AGRICULTURAL TEXT-BOOK. V 151 



V^ jk 



A B 



Silica, 1.24 - - 5.36 



Phosphoric acid, - - - 34.81 450 



Sulphuric a -id, 5.68 - - 566 



Carbonic acid, - - 1.82 - 1474 



Lime. - - 632 - - 37.99 



Miigwwia, - - 6.57 - 6.73 



P roxide of iron, 0.59 1.76 



Potash, .... 40.19 - 17.17 



Soda, - - 065 - - 248 



Chloride of sodium, O.G8 3.57 



Chloride of potassium, - 1.42 - 



These analyses prove that pea straw is a peculiarly valuable 

 fodder. According to Boussingnult, dried pea straw contains 

 1.95 per cent, of nitrogen; and 64 Ibs. of it, are equivalent for 

 nourishment to 100 Ibs. of ordinary hay, while 27 Ibs. of white 

 pens, and 25 Ibs. of beans (bj are equivalent to 100 Ibs. of 

 hay. 



359. Nutritive matter derived from an imperial acre of pease, 

 producing 25 bushels or 1600 Ibs. (Stephens.) 

 Hu-k or woody fibre, - 130 Iba. 



Starch, gum, &c. t - 81)0 &quot; 



Gluten, - - - 380 &quot; 



O I or fat, - 34 &quot; 



Saline matter, or ash, - - 48 &quot; 



36* . Sugar appear* to be contained in only a few of the leguminous 

 plants as in tlie ^nyar-pca ; gum, mi the contrary, mucus, anil pectic 

 acid, a wax-like substance, and the same salts as in the cereals, are con 

 stant ingredients in all. In the &amp;lt;-kins, particularly of lentils, tannin is 

 found. A,larj;e quantity of potash and soda, and a larger proportion 

 than usual of sulphuric acid, characterize their ashes. The leguniinvf 

 the pea and bean differs from the gluten of wheat in being soluble in 

 water, and in very dilute acid or alkaline solutions. 



361. THE PEA most commonly cultivated in the Northern 

 States, in fields, is the Grey or Canada Pea, ( Pisum ar- 

 vense;) but varieties of the White Pea (P. Sativum,) are also 

 grown on a large scale. In Virginia and the States southwards 



