Composition and Nutritive Value of Straw. 27 



BEAN-STRAW. 



I have examined two samples of bean-straw, one grown in 

 1860, the other in 1861. The composition of the first was as 

 follows : 



Composition of Bean-straw and Bean-pods. 



General Composition. 



Bean-pods. 



Water 19-40 19-02 



Soluble organic matter . . 5*69 *0rganic matter . . 73-66 



Soluble inorganic matter .. 2-31 Inorganic matter .. 7'32 



Insoluble organic matter .. 71*20 



Insoluble mineral matter . . 1*40 



100-00 100-00 



*Containing nitrogen 105 

 Equal to albuminous 



compounds .. .. 6*56 



Detailed Composition. 



Water 19-40 



Oil .. 1-02 



*( Albumen .. -47 



t Other soluble protein compounds 1-04 



Mucilage, extractive matters, &c., soluble in water .. .. 4-18 



Digestible fibre, &c 2-75 



Soluble inorganic matter 2*31 



(insoluble protein compounds 1-85 



Woody fibre 65-58 



Insoluble inorganic matter 1*40 



100-00 



*Containing nitrogen 243 



tContaining nitrogen 297. 



Total percentage of nitrogen 540 



Equal to protein compounds 3 '360 



Total percentage of ash 3-710 



The ash of bean-straw, according to Messrs. Way and Ogston's 

 analyses, published in the ninth volume of this Journal, contains, 

 in 100 parts 



Silica 3-86 



Phosphoric acid .. .. , 7'35 



Sulphuric acid 3'21 



Carbonic acid 22-73 



Lime 21-29 



Magnesia 4-88 



Peroxide of iron -90 



Potash .. ..' 21-26 



Soda 4-56 



Chloride of sodium 9*05 



Chloride of potassium . . . . -90 



99-99 



