ON FEEDING EXPERIMENTS. 383 



terial for the above analysis, was obtained by the following 

 process, according to the kind communication of Dr. A. 

 Bchr, the superintendent of the Chicago Sugar Rcfming 

 Company: "The process mostly followed in starch and 

 glucose works for the separation of starch, includes the use 

 of caustic-soda for dissolving the gluten (nitrogenous con- 

 stituents of the corn). Our process differs in these particu- 

 lars, that we do not use any caustic^soda at all, and that we 

 separate the germs of the corn before it is finally ground up. 

 The consequence is, that gluten meal contains no caustic- 

 soda or sodium-salts, and is comparatively poor in fat, — 

 this being for the greater part removed with the germs. 

 The way we proceed is briefly as follows : The water as it 

 comes from the mills and carries the fine starch and gluten 

 in suspension, is run over long slightly inclined troughs, the 

 ordinary " Starch-Tables." Here the heavy starch settles, 

 while the lighter particles, small starch, gluten, fibre and fat 

 are carried away with the water. This mixture is allowed 

 to settle in large vats, the clear water drawn ofi", and the 

 residue dumped into filter presses. The press cakes are 

 dried in steam driers, ground up in mills, and in this form 

 make the gluten meal." 



The calculation of the digestible portion of the gluten- 

 meal is based on that noticed in corn-meal, in actual feeding 

 tests. The numerical relations between the digestible amount 

 of nitrogenous constituents and of carbohydrates or non- 

 nitrogenous constituents in the above sample of gluten meal 

 (1;2.92), corresponds quite closely with that in a fair 

 sample of pease ; its mineral constituents are, however, but 

 one-fifth of that of the latter. 



The article is ofiered for sale by the carload in l)ulk at 

 $21 per ton, or $22.50 in bags, at Boston railroad depots ; 

 similar charges have been made in Springfield. 



The analyses of Wheat Bran and Timothy Hay, below 

 stated, refer to the materials used in this experiment. 



