774 EXPERIMENT STATION RECORD. 



ThPir estimnted v:iliie at tlie end of the test was $2,350, making the average 

 profit $45. G6 per colt. 



The biology of poultry keeping, R. Pearl (Maine 8ta. Bui. 21 Jf, pp. 101- 

 120, figs. 2). — This is a lecture delivered at Columbia University. January 31, 

 1912, which discusses in a general way the subject of poultry lieeping with 

 special reference to the small producer. Topics treated, are the selection of 

 good stock, the recognition of individuality, the importance of constitutional 

 vigor, the advantages derived from systematic inbreeding, and the housing, 

 feeding, and care of poultry. 



Notes on the poultry and egg industry in the United States, H. M. 

 Lamon (17. 8. Dept. Agr., Bur. Anim. Indus. Rpt. 1911, pp. 247-251, pis. 3).— 

 The author discusses the marked growth of the poultry industry throughout 

 the United States, especially in the Middle and P^ar West and the South. The 

 price of poultry products has increased and there has been improvement in the 

 methods of producing and marketing, partly due to the educational work of 

 poultry papers, shows, etc. Breeding poultry as a business has developed rap- 

 idly, and has been fostered by large and small breeders alike. 



Silver fox ranching in Prince Edward Island, J. E. B. McCbeadt (Re- 

 print from Charlottetown Guardian, 1913, Sept. 29, pp. 3). — An account of 

 this industry in which it is stated that there are 233 fox ranches on Prince 

 Edward Island, where 2,4S0 foxes of all grades are in captivity, of which 1,325 

 are classed as silver-black foxes. 



DAIKY FARMIITG— DAIRYING. 



Report of the Vermont Dairymen's Association (Rpt. Vt. Dairymen's 

 Assoc, 43 (1913), pp. 128). — A compilation of addresses and discussions on 

 general dairy topics, including cow-testing associations, selection and develop- 

 ment of the dairy cow, nutritive value of feeding stuffs in relation to dairy 

 feeding, etc. 



Comparative experiments with chopped beets and beet tops for milk cows, 

 A. Zaitschek (Landw. Vers. Stat., 78 (1912), No. 5-6, pp. 419-468) .—This is 

 an extended report of experiments carried on comparing the feeding value of 

 chopped stock beets and of beet tops when fed to milk cows. 



The general results indicate an increased flow from the feeding of chopped 

 roots. Beet tops were also fed to advantage, both in the fresh and the soured 

 stage, although digestive troubles are reported where too large a quantity is 

 given, and this material must be used in conjunction with such feeds as hay, 

 chopped straw, or oil cake. It is suggested that cows may receive an average 

 of 35 kg. per day of the fresh tops and less of the soured feed; calves may 

 receive from 15 to 20 kg. ; sheep from 2 to 8 kg. ; hogs from 4 to 6 kg. per 100 

 kg. live weight ; and horses 20 kg. 



Preliminary report on the milking machine, C. Laksen, W. White, and 

 J. W. Fuller (South Dakota Sta. Bui. I44, pp. 205-232, figs. 7).— This bulletin 

 includes a general description of the chief parts of the milking machine and 

 treats of its operation. • 



Tests of the effect of the use of the machine on the yield of milk and milk 

 fat were apparently negative when the machine was properly operated, al 

 though the results were not conclusive, except that cows producing a small 

 quantity of milk " have their lactation period slightly shortened by the use of 

 the milking machine," while the period of heavy producing cows was prolonged. 

 It is further noted that the machine-drawn milk was free from sediment but 

 contained more bacteria than did milk drawn by hand, due to the contaminated 

 barn air drawn in by the machine. Cotton filters placed in the machine re- 



