240 



THE BEAN CROP. 



In the beans, . . 

 In the straw, , 



64 Ibs. 

 182 



246 Ibs.; or of 



Silica, 



Phosphoric acid, 



Sulphuric acid, 



Carbonic acid, 



Lime, 



Magnesia, 



Peroxide of Iron, 



Potash, 



Soda, 



Chloride of Sodium, 



Chloride of Potassium, . 



In the Seed. 



Ibs. 



20 

 3 



1* 



f 



28 



In the Straw. 



Ibs. 



7 

 13 



n 



40 



38| 



9 



H 



38 

 84 

 17 



In all. 



Ibs. 

 7 



33 

 101 



13 



If 

 664 



9 

 18 



If 



182 



246 



The organic composition of the bean has also been well 

 worked out by our chemists ; and we now readily under- 

 stand how it has acquired its high reputation as a feeding 

 substance. 



Einhof and Braconnot have given its proximate com- 

 position as follows: 



Water, 15'5 



Husk, 16-2 



Meal, 68-3 



100-0 

 The meal being composed of 



Starch, : 69 



Legumine, 19 



Gum, sugar, &c., 12 



in the 100 parts. 



Fresenius gives the following as the average composition 

 of the Common Bean (Faba vulgar is), deduced from the 

 analyses of Horsford, Krocker, and Braconnot : 



Legumine, 23'3 



Starch, 36'0 



Fatty matter, 2'0 



Grape-sugar, 2'0 



Woody fibre, lO'O 



Pectic acid, 4'0 



Gum, 4'5 



Water, 14'8 



Ash mineral matter, 3'4 



lOO'O 



