ANALYSES OF WHEAT AKD STRAW. 71 



ing analysis, by Prof. Beck, of the constituents of grain : 

 Water 14.0; gluten and albumen, 146; starch, 59.7; 

 gum and sugar, 7.2 ; cellular and woody fibre, 1.7 ; fatty 

 matter, 1.2 ; mineral matters, 1.6=100. 



Professor Horsford, in his excellent work on the Paris 

 and Vienna Expositions, gives the following analyses of 

 the ash of average good wheat : potash, 30.00 ; soda, 

 3.50; magnesia, 11.00; lime, 3.50; oxide of iron, 

 1.00 ; chloride of sodium, 0.50 ; sulphuric acid, 0.50 ; 

 phosphoric acid, 46.50 ; silica, 3.50=100. He gives the 

 following organic and nutritive ingredients : Starch, 

 57.00; dextrine, 4.50 ; fibrine, 9.27; nitrogen, 2.23; 

 oil, 1.80 ; woody fibre, 6.10 ; ash, 1.70 ; extract matter, 

 1.40; water, 16.00. 



Professor Muller found the following in 100 parts of 

 heavy wheat grains : 



Water, 15.65; woody fibre, 2.54; ash, 1.57; nitro- 

 genous matter, 11.84; oil, 2.61; sugar, 1.41; starch, 

 64.38 ; albumen and gluten are included in the above as 

 nitrogenous matter, and with the starch constitutes the 

 nutritive matter. 



Professor Way showed that an acre of wheat, which 

 yielded forty bushels, gave in weight : 



Grain, 2,604 Ibs. ; mineral matter, 44 1 /., Ibs. Straw, 

 2,775 Ibs. ; mineral matter, 123 1 /, Ibs. Chaff, 401 Ibs. ; 

 mineral matter, 47Y 2 Ibs. 



The grain gave 5. 6 per cent of silica, and the straw 

 gave 69.36 per cent of silica ; the grain gave 43.98 

 per cent of phosphatic matter, and the straw 6.24 per 

 cent of same. Of lime, potash, magnesia, and soda, the 

 grain gave 49.87 per cent, while the straw gave only 

 20.20 per cent of the same ingredients. This large 

 amount of silica (dissolved sand) in straw and chaff 

 should go back to the soil for the benefit of future crops. 



