277 

 Maryland Station, Special Bulletin, October, 1890 (pp. 15). 



Composition of commercial fertilizers sold in ihis State, 

 H. E. Alvord, 0. E. — This bulletin, wliicli is the lirst publication 

 under the requirements of the new fertilizer law, contains anal,yses made 

 by Prof. J. D. Hird of forty-eight brands of commercial fertilizers, 

 l)opular explanations of fertih'zer valuations, the text of the new fertil- 

 izer law of Maryland, and special notes for the farmers of the State 

 regarding its enforcement. 



Massachusetts State Station, Bulletin No. 38, September, 1890 (pp. 12). 



Feeding experiments with milch cows, C. A. Goessmann, Ph. 

 D. (pp. 1-7). — The object of these experiments was to compare the effect 

 of new and old-process linseed meal on the quantity and quality of milic 

 produced, and on the cost of feed. Five cows, from six to seven years 

 old, all grades, and of fair milking quality, were used. The trial ex- 

 tended over six successive months. Daring the first three months the 

 cows were all fed on old-process linseed meal, wheat bran, corn meal or 

 carrots, and either hay, fodder corn, or hay and corn silage. The 

 average yield of milk for this time was 8.6 quarts daily per animal, and 

 the average net cost of food per quart of milk 1.4 cents. During the 

 remaining three months (six periods) old and new-process linseed meals 

 were compared, each being fed in connection with other feeding stuffs 

 for three periods, as indicated in the summary given below. The feed- 

 ing of the coarse fodders was at all times regulated by the appetites of 

 the animals, the unconsumed portions being weighed back each day. 



Tables give the composition of old and new-process linseed meal, the 

 fertilizing ingredients in each of the materials fed, their value based on 

 nitrogen at 17 cents, phosphoric acid at 6 cents, and potassium oxide at 

 4^ cents per pound, and a short statement of the results of the experi- 

 ment, the details being reserved for the annual report of the station. 

 According to the analyses stated the dry matter of the new-process lin- 

 seed meal contains 41.02 per cent of crude protein (old-process 36.97) 

 and 2.17 per cent of fat (old-process 7.24), and has therefore about 4 

 per cent more crude protein and nearly 5 per cent less crude fat than 

 the old-process meal; and the value of the fertilizing constituents in 1 

 ton of meal is $3.50 higher in the new-process meal, owing largely' to the 

 larger quantity of nitrogen. The estimates of the net cost of food per 

 (piart of milk are based on corn meal at $19 per ton, wheat bran at $17.50, 

 old-i)rocess linseed meal at $27, new-process meal at $26, hay and 

 rowen at $15 each, carrots at $7, corn silage at $2.75, and sugar-beets, 

 fodder corn, and corn stover at $5 each per ton, account being taken 

 of the fertilizing ingredients obtainable in the manure. 



The average results for the last three months of the trial (six feeding 

 periods) are given in the following summary: 



