DAIRY FARMING DAIRYING ^AGROTEGHNY. 27 1 



within many of those oountries a strong demand lias sprung up for the freer 

 admission of foreign cattle and meat." 



Some recent studies on heredity, E. B. Wilson (Jour. Amer. Med. Assoc, 

 //S (1907). No. J!), pp. J 357-1.563) .—This discussion of recent experiments in the 

 study of heredity is of interest in connection with animal breeding. 



Classification for American carriage horses ([/. 8. Dept. Agr., Bur. Atiiin. 

 Indus, rirc. lis, pp. .'/). — The Bureau of Animal Industry, in cooperation witli 

 experiment station officials, is attempting to establish a breed of American car- 

 riage horses which will come true to type. In order to accomplish this result 

 it was thought desirable to establish also classes for such horses at State and 

 National fairs. The present classification was adopted and is recommended to 

 fair associations in order to make the qualifications for carriage horses at differ- 

 ent fairs as nearly uniform as i)ossible. 



Belative proportions of the sexes in litters of pigs, G. M. Rommel (XJ. 8. 

 Dept. Agr.. Bur. Aivitii. Indus. Circ. 112, folio). — From data gathered for 1.477 

 sows representing 8 breeds, it appeared that the average size of a litter was 9 

 pigs in round numbers, made up of boars and sows in about equal proportion, 

 the ratio being 201 of the former to 200 of the latter. 



DAIRY FARMING— DAIRYING— AGROTECHNY. 



Dairy farming, ,J. Michaels (Clcmsoa College, 8. C: Author, 1907, pp. 212, 

 figs. 67). — The author states in his preface that he has endeavored to arrange 

 in a concise and systematic form the essential facts relating to the science and 

 practice of dairy farming. The book consists of two parts, one'dealing with the 

 dairy herd and the other with milk and its products. It is written in plain 

 language so that it may be used by the farmer not versed in science as well as 

 by the dairy student. The technical terms used are defined. 



Opportunities for dairying (U. 8. Dept. Agr. Yearbook 1906, pp. Jf05-Jf28). — 

 Following l)rief general notes l)y W. H. Dexter, G. M. Whitaker discusses 

 dairying in New England, B. D. White dairying in the North Central States, 

 B. H. Rawl dairying in the South, and E. A. McDonald dairying on the Pacific 

 coast. The advantages and disadvantages of the industry in each of the regions 

 mentioned are clearly set forth. 



The dairy cow, P. Dechambre (La Vaehe Lalticre. Paris: Libr. 8e[. Agr., 

 1907. pp. XI-\-2S0, figs. 23). — This volume is a part of a series on agriculture and 

 agricultural science. It deals with the formation of milk, the various daily 

 breeds, the care and feeding of cows, milking, and some of the more common 

 diseases of cows. 



The production, care, and uses of milk (Ontario Dept. Agr. Bui. 160, pp. 

 16). — This Imlletin is made up of a numljer of brief popular articles on subjects 

 indicated by the title. 



Development of dairy shorthorns, R. T. Archer (Jour. Dept. Agr. Victoria, 

 o (1907), No. 6, pp. 3JtH-3')7, figs. 6). — Notes are given on the value of short- 

 horns for dairy puri)oses and records of 40 cows for 1 to 6 lactation periods are 

 reported. The average yield of 1.3 3-year-old heifers for 1 year was 583 gallons 

 of milk and 289.!) lbs. of butter. 



Record of the station herd, 1905-6, .1. L. Hills (Vermont Sta. Rpt. 1906, 

 pp. 351-3o5). — Tabulated records of the station herd from November 1, 1905, to 

 October 1. 1906, are pnl)lished. 



The effect of age on the yield and quality of milk, J. L. Hills and E. Kihby 

 (Vermont 8ta. Rpt. 1906, pp. 339-350). — Annual records of 99 cows secured at 

 the station during a period of 10 years were studied to show what effect ad- 

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