154 EXPERIMENT STATION RECORD. 



order and put into tlie barn June 30. The Htubble was immediately turned under 

 for corn. Yield, about 2 tons i)er acre. 



"Rye bay (1), sowed September 6, 1892, after corn. Cut June 3, 1893; cured in 

 good order and put into barn June 6. Yield, about 1^ tons per acre. 



" Rye bay (2), sowed September 28, 1892, after corn, which yielded 24 tons per acre. 

 Cut June 8, 1893; cured in good order and put in barn .Tune 10. Yield, about 2 tons ■ 

 per acre. 



"Rye hay (3), sowed after corn October 11, 1892. Cut May 22, 1893, to clear the 

 ground for corn. This Avas poorly cured; rained on while spread. Yield, about 1 

 ton per acre. 



"The analyses indicate that these cereal crops, cured as hay, have, with the excep- 

 tion of rye hay (3), rather less protein and more liber than average hay from mixed 

 meadow grasses. 



"The higher content of protein in [rye hay (3)] as well as its smaller yield per 

 acre, are explained by the fact that it was cut earlier than the other lots. . . . 



" [The by-products from maize meal] mostly come from the factories of starch and 

 glucose, of which the 5 largest in the United States together are said to be able to 

 work up 120,000 bu. of corn daily. Glucose is made by chemical treatment of 

 starch. The preliminary processes by which the starch is separated from the other 

 parts of the kernel are essentially the same in all factories, and are stated by the 

 representative of one of them to be as follows: 



" The corn is ground with water between stones and first passed over sieves which 

 retain the hull or chaff, while the starch mixed with the so-called 'gluten' runs to 

 settling tanks. The starch, being specifically heavier than the gluten, sinks to the 

 bottom, while the gluten lies above the starch. When both have completely settled, 

 the clear water first, and next the gluten, are run off, leaving the starch. . . . 



"The Chicago gluten meal is the clear gluten from the settling tanks, dried and 

 perhaps ground. . . . 



"The Chicago maize feed is a mixture of gluten meal and hulls, not dissimilar 

 to Buffalo gluten feed. 



"The Chicago corn bran consists of the bulls left on the sieves and of the corn 

 chits, or germs, from which the oil has been partly extracted. . . . 



"Pope's germ feed is very like the Chicago corn bran in its origin and composi- 

 tion. . . . Buffalo gluten feed consists of all those parts of the kernel not 

 directly used to make glucose and contains, therefore, all the 'gluten,' hulls, and oil 

 of the kernel. This gluten feed is a more concentrated food than wheat bran, con- 

 taining some 6 per cent more of protein and two or three times as much oil as the 

 latter, and more nonnitrogeuous extract with less filjer and mineral matter. . . . 



" ['Proteiua'] apjiears to be a mixture of corn, oat hulls, linseed, meal, and perhaps 

 gluten meal. 



" It may be most fairly compared, as far as (;hemical coiuposition goes, with Buffalo 

 gluten feed, but its price is, at present rating ($25), too high to make it an eco- 

 nomical feed. 



" Special cow feed is said to be composed of 40 lbs. of gluten meal, 40 lbs. of hominy 

 chops, 15 lbs. of oats, and 5 lbs. of linseed meal in every 100 lbs. 



"Assuming that the 'gluten meal' of the formula is gluten feed with 22 per cent 

 of proteids instead of 36 or 38, such a formula ought to make a considerably richer 

 feed, containing some 4 jier cent more of protein, than is in the sample. , , . 



"The analysis [of the special-made mill feed] shows it to be a less concentrated 

 feed than wheat bran. In the circular received from the manufacturer nothing is 

 stated as to the ingredients which enter into this 'special-made feed.' . . . 



" [Elevator screenings are] used chiefly as poultry food, but to some extent for cat- 

 tle. It is to be judged rather by inspection than chemical analysis. It consists of 

 damaged grain mixed with seeds of cockle and a host of other weeds. Its use either 

 for poultry or cattle makes pretty certain a further seeding of the farm Avith nox- 

 ious weeds. . . . 



