408 Composition and Nutritive Value of Straw, 
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 : — 
Conqmitlon of Bean-straiv and Bean-jwds. 
General Composition. 
Bean-pods. 
ll)-02 
*Orgauic matter .. 73-(j() 
Inorufanic matter .. 7'32 
Water 
19-40 
Soluble organic matter 
5-(i!J 
Soluble inorganic matter . 
2-31 
Insoluble organic matti'r 
. 71-20 
insoluble mineral matter . 
1-40 
100-00 
100-00 
*Containing nitrogen 1'05 
Equal to albuminous 
compounds .. .. C'56 
Detailed Composition, 
Water , .. .. 19-40 
Oil ]-02 
^(Albumen -47 
(Other soluble protein compounds 1-04 
Mucilage, extractive matters, etc., soluble in water .. .. 4-18 
Digestible fibre, &c 2-75 
Soluble inorganic matter 2-31 
•flnsoluble protein compounJs 1-H5 
Woody fibre 65-58 
Insoluble inorganic matter 1-40 
100-00 
*Containing nitrogen • 243 
•j-Containing nitrogen '297 
Total percentage of nitrogen • 540 
Equal to protein compounds 3 '360 
Total percentage of asli 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 
I'eroxide of iron -90 
Potash 21-26 
Soda 4-56 
Chloride of sodium 9-05 
Chloride of jiotassium "90 
99-99 
