274 EXPERIMENT STATION RECORD. [Vol.41 



The nutrition of the horse, J. B. Lixdsey {.Mafisachusetts Sta. Bui. 188 

 (191S), pp. 2Jf3-26S). — Some of the classic work on the nuti'ition of horses is 

 reviewed, and report made of several feeding exi>erinuMits with two horses 

 during three years under practical working conditions. 



A daily ration of 8.5 lbs. of alfalfa hay and S.5 lbs. of oats and corn (1:4) 

 per 1,000 lbs. live weight, found satisfactory for artillery horses by the Kansas 

 Station (E. S. R., 29, p. 873), did not prove sufficient for the two horses doing 

 " reasonably hard " farm work, as they lost in weight and were restless. In- 

 creasing the ration by 10 per cent checked the loss in weight Init not the restless- 

 ness. Partial replacement of the alfalfa liy tinKjthy hay served to reduce the 

 restless action considerably, 



" While recognizing the large number of horses in the Kansas experiment and 

 the satisfactory results secured, on the basis of our own observations and the 

 accepted feeding standards, it seems to the writer that the amounts of the sev- 

 eral feeds are not likely to be sufficient, nor the combination particularly sat's- 

 factory, for most work horses. It is believed that for each 100 pounds of live 

 weight a pound of roughage is a reasonable allowance, and that one-half of this 

 roughage may consist to good advantage of alfalfa, and the balance of a timothy 

 mixture." 



Various successful modifications of a grain ration of oats, corn, and bran by 

 the partial or complete substitution of brewers' dried grains, velvet bean-and- 

 huU meal, or linseed meal for one of the ingredients are reported on the basis of 

 extended tests. Mixed timothy hay was used in these experiments. It was 

 found that 50 per cent or more of the oats could be replaced by an equal weight 

 of brewers' grains. Mixtures of oats, corn, velvet-beau feed, and bran 

 (5:8:2:2 and 5:7:3:2) were given continuously for over 3 months and " the 

 results were in every way satisfactory." Linseed meal was fed as a grain sup- 

 plement for 10 weeks and proved practicable. The mixture mostly used was 

 oats, whole corn, and linseed meal (5:8:1). A higher proportion of linseed 

 meal was not so well relished, as the meal did not mix well with the unground 

 corn. 



Egg-weight as a criterion of numerical production in the domestic fowl, 

 P. [B.] Hadley {Science, n. set:, 49 {1919), No. 1210, pp. Ji21-J,29).—X year's 

 egg records of 31 hens (bre(^d not specified) at the Ilhode Island Experiment 

 Station are summarized to show that the relative difference between the aver- 

 age weight of the 10 or fewer eggs laid by a hen at the period of highest produc- 

 tion of the flock in September and the average weight of the first 10 eggs she 

 lays at the beginning of the laying year is a good index of her yearly production. 

 Similar but less striking results are claimed when egg weights during the 

 April peak in production are used in the same comparison. It is held that 

 higlier producing hens can be identified more readily by the greater increase 

 in the weight of their eggs than by any other means. A tentative announce- 

 ment of a " fundamental law " of egg production is made embodying these 

 facts. 



DAIRY FARMING— DAIRYING. 



Dairy production in Ohio, II. I. (Juauy and M. O. Bughy {Ohio Sta. Bnl. 334 

 {1919), pp. 509-541, figs. 3). — This bulletin is a report on the cost of producing 

 milk as revealed by 84 yeai'ly records of 33 Ohio dairy herds during the period 

 1910-1915. Two preliminary reports have been noted (E. S. R., 37, p. 575; 

 40, p. 375). The methods of collecting the data are exi)lained in detail, and 

 the blank forms supplied to collaborators are re]iroduced. A notewoi'thy fea- 

 ture of the report is the fact that the individual herd averages of all tlie items 



