DAIHV FARMING DAIRYING AGROTECHNY. 7(i5 



records ■•iiid siiiiilnr (hiln (•(pllcrtcd Tor trottiiiLr. ituciiit;, niid niiiuiiii: horses, as 

 well MS lor iiirii niiiiiiiii;. ro\viii;r. skatin.ir. and s\vi!lll^ill.t,^ 



I'"roiii I lie <lata suiiiiiiari/.cd a iniiiiher of irt'iicral deductions arc drawn, from 

 wliicli the followintx arc ((uotcd : 



•■ 'I'lic lime \arics apiiroxiniatcly as the nintii power of the eighth root of 

 the distance. Douhlinj? tlie distance means increasing,' the time llS i)er cent. 



"The time occupied in a record-making raoe varies aiiproximately inversely 

 as the ninth power of the speed over the course. l>oul)Hng the si»eed cuts 

 down the racing time 512 times. 



" The distance covered increases approximately as the eighth jiowcr of the 

 ninth root of the time. Doubling the time of the race allows of increasing 

 the course length by 85 per cent. 



"The distance covered increases aiiproximately as the inverse eighth power 

 of the speed over the course. l>nnl>ling the speed cuts down the distance that 

 (an lie covered 25(» times. 



"The speed over the course varies ai)pr()xiniately as the inverse (>ighth root 

 of the distance. Doubling the distance brings down the s])eed alxmt !».."*. per 

 cent. 



"The speed over the course varies aiiiiroximately ;is the inverse ninth root 

 of the racing time." 



The mule and its uses, J. I.. .Tonks (Breeder's Go:.. ■',<) {Hkh;). \o. ,s'. ///<. 

 .i.>.')-327, fi[/s. 2; D, p. Ml; 10, ijp. 'jl'i. 'ilo; 1.',, pp. 650, 651, fitix. .i ; .iC, pp. I'i1>^. 

 I'll-K fiffs. 3). — The history of mule raising, methods of breedin.g, feeding, care 

 and management of nniles, and related questions are discussed on the basis of 

 exiiericiice. According to the ;iuthor. unshelled corn, ground barley, shelled 

 oats, bran, corn, and similar materials are satisfactory feeds for mules and 

 should be used in conjunction with hay and corn forage. Salt siiould be given 

 regularly. Hulled oats and bran are regarded as essentials for fattening mules 

 and for pi'oducing a fine c<jat. 



Animal food for poultry, H. De Courcy {Jour. Bd. Ar/r. [London], 13 

 (1906). \o. 8. pp. .'i-n-'ilil). — The value of different sorts of animal feed and 

 related questions are considered. 



" Fowls kept in confined runs should have an ample supply of animal food. 

 This is not only necessary in order that they may lay good number of eggs, 

 but also to prevent egg eating and feather pulling. These depraved habits are 



usually indulged in by fowls which ai-e confined and fed on t arbonaceous 



a diet. In such conditions, fowls have an insatiable craving for animal food, 

 or. ill other words, for more protein, and they strive to satisfy the desire by 

 eating their own eggs .•iiid piu<'l<ing out and swallowing the feathers from 

 each other's bodies." 



The ostrich feather industry (Brit. Trade Jour., J/o (1907), ^"o. 529, pp. 

 11-19. fi(/x. Y). — Breeding, feeding, and handling ostriches, feather plucking, 

 and rel.ited (piestions are discussed. On the basis of personal experience, the 

 author stales that the eggs are very satisfactoiy for food purposes, being 

 usually cooked in the form of omelettes. A native method is to cook the 

 whole egg in the hot ashes of a fire built in a shallow hole in the ground. 



DAIRY RMING— DAIRYING- AGROTECHNY. 



Feeding experiments with milch cows, J. II.vasex (Litndw. Jahrb., 35 

 (19011). Sup. .'/. pp. 321-.1<>9). — Various feeding stuffs were conii)ared in tests 

 with 10 cows covering a period of 140 days. The work is a continuation of 

 experiments previously noted (E. S. K.. 17, p. 001). 



Among the conchisions readied are tlie following: Feeding stuffs exert a 



