1917] DAIRY FARMING DAIRYING. 775 



one of the above protein feeds. During the year the linseed raeal pen laid an 

 average of 64.9 eggs per hen, the gluten meal fed hens an average of 63.8 eggs 

 each, and the cottonseed meal fed hens an average of 66 eggs each. The hens 

 did not relish the linseed raeal mash as much as they did the other mashes. 

 " So far as could be ob.served the hens in all pens were in perfect health 

 throughout the entire experiment with vegetable proteins. No deleterious effects 

 were observed in the use of the cottonseed meal. 



" Beef scrap and sour rnUk are the most econonjical methods of supplying 

 protein to laying hens. Protein concentrates of vegetable origin alone did not 

 materially increase egg production It is poor economy not to furnish the lay- 

 ing hen a protein concentrate of animal origin." 



The poultry keeper's m.anual, G. Allman {West. Aust. Dept. Agr. Bui. Ift 

 (1916), pp. 96, pi. 1, figs. 25). — A practical treatise on the growing of poultry 

 and their diseases and remedies therefor. 



Commercial egg farming, S. G. Hanson (London: Constable d Co., [1916], 

 pp. 62, pis. 8). — Practical methods ai)plying to English conditions are set forth. 



Poultry standards in their relation to utility, J. Hadlington (Agr. Gas. 

 N. .S'. Wales, 28 (1917), No. S, pp. 208-216, figs. 6).— Standards are given for the 

 White Leghorn, Black Orpington, and Rhode Lsland Red breeds of fowls, to- 

 gether with photographs which represent the author's interpretation of the 

 utility character of the.se breeds. A plea is made for a revision of the scale of 

 points for these breeds .set out in the English standards. 



American squab culture, E. H. Eggleston (Chicago: Author, 1916, pp. 191, 

 figs. 57). — A practical treatise for those in the business of raising squabs for 

 market. The subjects treated are breeds, breeding, marketing, pests and ail 

 ments, houses, and equipment. Considerable miscellaneous information is 

 also given on various problems likely to ari.se in the pro.secution of the industry 



Squab culture, D. R. Woou (Terre Haute, Ind.: The Indiana Squab Co., 1916 

 pp. 71, figs. 17). — Practical instructions in rai-sing and marketing squabs. 



The raising and care of guinea pigs, A. C. Smith (Kansas City, Mo.: 

 Author, 1915, pp. 85, figs. 5).— This treats of the rearing, marketing, and u.ses. 



The rabbit: How to select, breed, and manage the rabbit for pleasure oi 

 profit, W. N. Richardson (Syracuse, N. Y.: Clarence C. DePuy, 1916, 7. ed., pp 

 61,, figs. 11,). 



DAIRY FARMING— DAIRYING. 



Cattle breeding problems and their solution, R. Peael (Ann. Rpt. Comr. 

 Agr. Maine, IJ, (1915), pp. 215-2J,2, figs. 4). — Progress reports are presented on 

 the following lines of work being conducted at the Maine Station : 



The study and analysis of milk records. — In a .study of the relation of milk 

 flow to age in dairy cattle (E. S. R., 32, p. 575), a comparison was made of 

 American and Scotch Ayrshires in respect to milk production. Comparing the 

 mean weekly yields of American Advanced Registry and Scottish Milk Records 

 Society Ayr.shire cows, it was found that the American cows outyielded their 

 Scottish sisters by 1.23 gal. per week in the 2-year-old class, 2.92 gal. in the 

 3-year-old class, 2.24 gal. in the 4-year-old class, and 1.76 gal. in the " mature " 

 class. The mature American cows produced about 9 per cent more milk than 

 the mature Scotch cows. The question is raised whether the American standard 

 is high enough to get the best results in the direction of breed improvement. 



For the purpose of comparing herds made up of cows of various ages and 

 stages of lactation the author has constructed a dairy efficiency table in which 

 it is assumed that cows from five to seven years of age and during the first 

 month of lactation are 100 per cent efficient, and that cows of any other age 



