ANIMAL PRODUCTION. 473 



at a cost of 0.64 marks per kilogram ; with maize meal 0.68 kg., at a cost of 

 0.5S marks per kilogram : and with sugar chips 0.59 kg., at a cost of 0.67 marks 

 per kilogram. 



In another exi)erinient with the same number of swine, lasting 70 days, the 

 average daily gains per head were as follows: With steamed potatoes and bar- 

 ley meal 0.71 kg., steamed potatoes and potato chips 0.70 kg., barley meal 

 0.71 kg., and barley meal and potato chips 0.73 kg. 



Pig- feeding experiments at Clonakilty Agricultural Station, 1907-8, .7. L. 

 Duncan {Dipt. Agr. and Tech. Imtr. Ireland Jour., 9 {1909), No. 3, pp. JjSS- 

 46.i). — To determine the value of separated milk for pig feeding three lots of 

 13 pigs each were fed a basnl ration, of meal containing equal parts of corn 

 and barley. Lot 1 receivetl a supplementary ration of potatoes and separated 

 milk and made an average daily gain per head in 3 months of 1.88 lbs., returning 

 a total net profit of £6 8s. lOd. (about $31.30). Lot 2 was fed skim milk for a 

 supplementary ration, and in 3 months made an average daily gain per head 

 of 1.95 lbs., returning a total net profit of £7 13s, 4d. Lot 3, which received 

 potatoes as a supplementary ration, made an average daily gain per head in 

 5 months of 1.09 lbs., being fed at a total loss of £6 3s. lOd. 



Feeding of pigs, H. W. Potts {Agr. Gaz. N. 8. Wales, 19 {1908), Nos. 8, pp. 

 638-6J,2; 10, pp. 808-812; 20 {1909), Nos. 1, pp. 26-31; .',, pp. 275-282 ) .—This 

 is a series of articles on the value of alfalfa and other legumes, rape, potatoes, 

 artichokes, sweet potatoes, cassava and other roots as feeds for pigs. Direc- 

 tions are given for the best methods of growing' and feeding these crops under 

 Australian conditions. 



Hog raising in Colorado, H. M. Cottrell {Colorado Sta. Circ. 2, pp. 14). — 

 This is a brief popular account of the best methods of raising hogs in Colorado. 

 A short list of books and bulletins on the subject is appended. 



A fortune in eggs, L. F. A'an Orsdale {Syracuse, N. Y., 1908, pp. 67, pi. 1, 

 figs. 2'i, chart 1). — This is a popular work on poultry. Special attention is 

 given to the use of trap nests as a means of improving the egg-laying qualities 

 of the flock. 



Poultry secrets, M. K. Koyek { I'hiladclpliia, 1909, pp. 56, figs. 9). — This is a 

 poj)ular work on poultry. 



Report of fourth egg-laying competition, F. II. Hobertson {Jour. Dept. Agr. 

 West. Aust., 18 {1909), No. //, pp. 279-285).— In a 9 months' contest the average 

 egg yield per hen was 111.4 eggs, the cost of feed per hen $1.44, and an average 

 l)rofit over feed of $1.50. In a duck egg-laying contest the average yield was 

 128.8 eggs, the cost of feed per duck $1.44, and the average profit over feed 

 $1.59. 



The keeping of egg records {Dept. Agr. and Tech. Instr. Ireland Jour., 9 

 {1909), No. 3, pp. 432--'/.'f9). — The advantages of keeping egg records are pointed 

 out and complete monthly records are given of 125 flocks. The annual yield of 

 eggs from these flocks ranged from 68 to 201.1 per hen. 



Experiments with ostriches, J. E. Duerden {Agr. Jour. Cape Good Hope, 33 

 {1908), No. 6, pp. 786-791, figs. 2; 3J, {1909), No. 5, pp. 513-524, figs. 3).— This 

 contains a scientific glossary of technical terms used in describing various kinds 

 of feathers, parts of the feather, commercial characters or " points " of a 

 feather, and trade cliissification. 



Evidence is presented to show that the feathers in a highly nourished bird 

 may take longer to ripen but will be increased in length, and that a feather 

 germ ox socket once injured, either accidentally or by careless quilling, will 

 probnbly never recover but continue to grow a malformed feather with each 

 crop. 



For earlier work see a previous note (E. S. R., 20, p. 473). 



