12 



The gluten meal is obtained as a by-product in the manufacture of 

 starch and glucose from cprn. It consists mainly of the germs of the 

 latter with more or less skill' pauts'iand starch. The supply of this 

 substance has acquired considerable proportions in consequence of 

 the recent development of the glucose industry in the country. 



Examinations of samples from various sources have demonstrated 

 its highly nitrogenous character, and left but little doubt about its 

 value for feeding purposes under suitable circumstances. For 

 details in this direction I refer, as far as my own observations and 

 statements are concerned, to Bulletin I, page 11, and Bulletin V, 

 page 5. The variations noticed in composition are in the main evi- 

 dently caused b}' modifications in the manufacturing process, — a cir- 

 cumstance by no means an exceptional one, as far as the gluten-meal 

 is concerned : for all our valuable refuse materials for fodder, as 

 brans, oil-cakes, etc. suffer from the same influence. The sample, 

 which served for our feeding experime its and furnished tlie material 

 for the above analysis, was oi)tained by the following process, accord- 

 ing to the kind communication of Dr. A. Behr, the superintendent of 

 the Chicago Sugar Refining 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 

 constituent of the corn). Our process differs in these particulars, 

 that we do not use any caustic-soda at all and tliat 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 shortly, 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, fiber and fat are carried 

 away with the water. This mixture is allowed to settle in large 

 vats, the clear water drawn off, and the residue pumped 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 

 the corn-meal in actual feeding-tests. The numerical relations be- 

 tween the digestible amount of nitrogenous constituents and of carbo- 

 hydrates or non-nitrogenous constituents in the above sample of 

 gluten-meal (1:2.92) corresponds quite closely with that in a fair 

 sample of peas , its mineral constituents are however but one-fifth of 

 that of the latter. 



The article is offered for sale by the carload in bulk at $21.00 per 

 ton, or $22.50 in bags, at Boston K. R. depots ; similar charges have 

 been made in Springfield. 



C. A. GOESSMANN, Director, 



Amherst, Mass. 



^^P. S. The Bulletins of the Experiment IStation will he sent free 

 of charge to all parties interested in its work, on application. 



