I'JOl).] 



PUBLIC DOCUMENT — No. 38. 



i»7 



The above figures are quite instructive. They show that 

 digestible matter in bran, cotton-seed meal and distillers' 

 and brewers' dried grains has cost about the same for a num- 

 ber of j^ears, while in the form of malt sprouts the price has 

 been somewhat less.^ Corn and corn by-products (gluten 

 and hominy feed) have furnished digestible matter for uni- 

 formly less money than it could be purchased for in the form 

 of either bran, cotton-seed meal, distillers' or brewers' resi- 

 dues. 



Retail Cost of Digestible Frotein. 



[Allowing 1 cent for digestible carbohydrates, .5 cent for digestible liber and 2.25 cents 



for digestible fat.] 



Cotton-seed meal furnishes digestible protein for the least 

 money, gluten feed standing next in order, while protein in 

 the form of wheat bran is decidedly expensive. Naturally, 

 carbohydrate feeds, corn and the like, are not economical 

 sources of protein. 



(4) Fertilizing Ingredients in a Ton of Concentrates. 



Bran is quite rich in the mineral ingredients phosphoric 

 acid and potash, being exceeded only l)y cotton-seed meal. 



* The retail price of malt sprouts and brewers' dried grains has been rather 

 difficult to ascertain, for the reason that comparatively small quantities are sold 

 in Massachusetts markets. 



