674 EXPEEIMEKT STATION EECOED. 



" General diseases as a rule lead to no arrest of hoof growth ; indeed there 

 is often an enhanced growth after recovery from a disease. The hoof horn, 

 however, becomes dull when the animal is ill and shows a deficiency in moisture 

 and elasticity." 



Contribution to the study of the dentition of the Equidae, A. Veith 

 (Arch. Naturgesch., 78 (1912), AM. A, No. 5, pp. 1-33, pis. 2).— A discussion of 

 the character and succession of teeth in horses, zebras, and extinct equine types. 



Ostriches [and stallions] from the Sudan (Aflr, Jour. Union So. Africa, 3 

 (1912), No. 6, pp. 807-813). — A brief report of an expedition sent by the Union 

 Government of South Africa to secure, if possible, some ostriches from the 

 northern sections of the continent, where there is believed to be a special type 

 from which the best feather producers of the South African birds have 

 descended. 



The feathers which could be obtained from birds east of Lalie Chad were 

 very thin, much like the feathers of the wild birds of South Africa. In northern 

 Nigeria 140 birds were obtained and taken to Cape Town. The peculiarities 

 of these birds were dense, healthy, short feathers, red skins, bald heads, and 

 eggs larger than the South African ostriches, but unpocketed and a thin shell. 



There is a note concerning 2 Asben stallions obtained from the Tuarek tribe, 

 a breed which is considered by these people to be superior to the Arabian 

 horses and which has been kept pure for many centuries. 



Poultry keeping as an industry for farmers and cottagers, E. Brown 

 (London, 1012, 8. cd., pp. ri+206, pL 1, figs. i^O).— Some of the chapters in this 

 book have been rewritten since the last edition, and much new matter has been 

 incorporated embodying the more recent results of practical experience in 

 poultry keeping. 



Fleshing chickens for market, W. A. Wilson (Saskatchewan Dept. Agr. 

 Bui. 25, 1911, pp. 29, figs. 15; abs. in Internat. Inst. Agr. [Rome^, Bui. Bur. 

 Agr. Intel, and Plant Diseases, 3 (1912), No. 3, pp. 71,2, 7//3).— The average 

 cost of fattening poultry in experiments carried out in the yeai'S 1907 to 1910 

 was 5.98 cts. per pound dressed weight, and the selling price 18.74 cts. per 

 pound dressed weight. The average dressed weight per bird was 3.23 lbs. The 

 methods of feeding are given, 



A new process of preserving eggs (Sei. Amer. Sup., 7J, (1912), No. 1909, 

 p. 76, figs. 4)- — This describes the process invented by M. Lescarde in which 

 the eggs are placed in a specially constructed metal box and carbon-dioxid and 

 nitrogen gas used as sterilizing agents. 



" When the box is filled with eggs, a small amount of chlorid of calcium 

 is put in to absorb the greater part of the moisture of the air, and then the 

 cover is soldered on, leaving a small hole in the top for the circulation of 

 air or gas. The boxes are then ready to be taken to the sterilizer, which con- 

 sists of a large cylindrical tank. . . . The boxes are stacked upon roller trucks, 

 which are then run upon rails to the tank, a considerable number being treated 

 at a time. The cylinder has a tight closing door, and resembles an injecting 

 cylinder for treating railroad ties. The tank is first of all exhausted to ex- 

 tract the gases or air from the air pocket of the eggs and also the gases dis- 

 solved in the albumin. After this has been done, carbonic-acid gas is sent into 

 the apparatus from steel bottles containing compressed or liquefied gas. As 

 the gas which leaves the bottles becomes very cold owing to its expansion it is 

 warmed somewhat to prevent cracking of the eggshells. For this purpose the 

 gas is run through a worm tube placed in a tank of warm water. The pressure 

 in the tank is observed by means of a gauge. After admitting a certain amount, 

 the gas is shut off for a time, while it continues to be absorbed by the albumin 

 of the eggs. Fresh gas is then let in when the pressure is seen to fall, and 



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