DAIBY FARMING DAIRYING. 373 



birth. The liver of the chick contains glycogen on the twentieth day of incuba- 

 tion. It becomes glycogen-free 24 hours after hatching if no food has been 

 given. Glycogen was found in the liver on the second day after food contain- 

 ing starch had been given. Lactose is not a glycogen-former in chicks and acts 

 as an irritant to the gastro-intestinal mucosa." 



[Food supply for ducks], G. R. Mickle (In The Increase of the Food Sup- 

 ply for Ducks in yorthern Ontario. Toronto: Govt., 1913, pp. 3-7). — It Is recom- 

 mended that wild celery (Vallisneria spiralis), floating pond weed (Potamoge- 

 ton natans), and other plants be grown in northern Ontario in order to increase 

 the food supply for wild ducks in that region. 



Successful incubation and brooding, J. W. Hurst {London [19111, pp. lllf, 

 figs. IG). — This is a general guide to the hatching and rearing of poultry by 

 artificial moans. 



Fur farming in Canada, J. W. Jonss (Montreal: Govt.. 1913. pp. VIII+166, 

 pis. 29). — The author treats of methods of breeding and raising fur-bearing 

 animals and discusses their economic importance. 



DAIRY FARMIKrG— DAIRYrMG. 



Eighth report of feeding experiments at the agricultural college of Nor- 

 way, lSll-12, H. ISAAcnsEN ET AL. (Bcr. Foringsforsoks Stat. Norges Land- 

 hrukshmskole. 8 (1911-12), pp. 10. figs. 17). — This report includes accounts of 

 the following experiments : 



Brush meal and its value for dairy cotes, B. Fridrichsen (pp. 5-10). — The 

 brush meal was made by running twigs, leaves, and branches of deciduous trees 

 through a grinder to the size of a wheat kernel. The average composition was 

 dry matter 80.0, ash 2.41, protein 6.01, fat 4.12, fiber 28.45, and nitrogen-free 

 extract 39.01 per cent. The digestion coefficients obtained in trials with 2 

 goats were as follows: Organic matter 38.6, protein 27.1. albuminoids 18.9, 

 fat 61.7, nitrogen-free extract 47.1, and fiber 26.4 per cent. In a feeding experi- 

 ment with 8 cows lasting 80 days (experimental period proper 30 days) the 

 brush meal was found to have a value similar to cut straw, pound for pound, 

 and was relished by the cows. In the case of a hay or straw famine it may 

 be considered a valuable substitute for these feeds. 



Compari.'ions of 2 and 3 times a day milking, A. Lamlin and I. Grande (pp. 

 11-33).— Two experiments were conducted, 1 according to the group system 

 with 8 cows and the other according to the period system with 9 cows. The 

 first experiment showed that cows producing from 10 to 12 kg. milk per day 

 were able to maintain their milk flow better on milking 3 times a day than 

 when milked twice a day, producing from 0.7 to 0.8 kg. more per head daily. 

 The more frequent milking did not influence the fat content of the milk in 

 either experiment. In the second experiment cows milking from 10 to 15 kg. 

 daily produced, on the average, 1 kg. more milk per head daily on milking 3 times 

 a day than when milked twice daily. For cows milking only from 4 to 6 kg. 

 daily no appreciable increase in yield was obtained by milking 3 times a day. 



Comparative trials with the Hegelund method of milking and common good 

 milking, I. Grande (pp. 34-^7). — The results of an experiment with 8 cows 

 lasting 105 days (experimental period proi:)er 55 days) showed that the amount 

 of milk obtained by the Hegelund method of milking was no higher than that 

 obtained by common good milking, and the percentage of fat was not appreciably 

 changed by this method. It took a longer time and gave a higher sediment 

 content in the milk (as determined by the Gerber method.) than did ordinary 

 milking. 



