384 EXPERIMENT STATION RECORD. [Vol. 36 



A case of contagious broncho-pneumonia caused by Bacillus coli com- 

 munis, E. M. Stanton (Vet. Jour., 12 (1916), No. 490, pp. 138, 139).— In an 

 outbreak of this disease in aiassachusetts in whicli some 40 young calves suc- 

 cumbed B. coli communis appeared to be the causative agent. 



The use of arrhenal for the treatment of Texas fever, J. E. Aghion (Jour. 

 Am.er. Vet. Med. Assoc, 50 (1916), No. 2, pp. 227, 228).— The successful use of 

 arrhenal (disodium-methyl arsenate) in several cases of Texas fever in cattle 

 in Egj'pt is reported. 



Further studies on hog cholera with reference to Spirochaeta hyos, W. E. 

 King and R. H. Dkake (Jour. Amer. Vet. Med. Assoc, 50 (1916), No. 2, pp. 168- 

 188, figs. 6). — Inoculation experiments with several strains of virus are re- 

 ported aud the results discussed in some detail. 



It is concluded in general that in order to prove with certainty the direct 

 etiological relation of S. hyos to hog cholera " some means must be developed 

 through which the organism may be isolated in pure culture directly from the 

 infected animal in order that pure cultures, unattenuated by tedious manipula- 

 tion in an artificial environment, may be utilized in a series of animal inocula- 

 tion experiments. Under such conditions uniformly positive results, together 

 with data already in hand, would serve as final, conclusive evidence as to the 

 specific pathogenicity of S. hyos." 



It is indicated that until such experiments can be successfully carried out 

 positive conclusions must be withheld. S. hyos, however, is regarded as an 

 organism present in animals infected with hog cholera, possessing certain char- 

 acteristics suggestive of its pathogenic nature. ' 



Illinois hog cholera senim plant (Breeder's Gaz., 10 (1916), No. 20, pp. 

 929, 930, .figs. 4). — This is a description of the equipment and methods employed 

 in the manufacture of serum at the Illinois state hog cholera serum plant at 

 Springfield. 



Enterohepatitis or blackhead in turkeys, C. H. Higgins (Canada Dept. 

 Agr., Henltli Anim. Branch Bui. 11 (1915), pp. 11, pis. 5). — A general account 

 of this disease, together with an account of the prevention of blackhead by the 

 biological laboratory method of artificial incubation and isolation. 



Enterohepatitis or blackhead and the biological laboratory system of rais- 

 ing turkeys, C. H. Higgins (Canada Dept. Agr., Health Anim. Branch Bui. 19 

 (1916), pp. 6). — The information given in this bulletin supplements that noted 

 above and outlines the biological laboratory system of raising turkeys. 



RURAL ENGINEERING. 



Proceedings of the Ohio Engineering Society, thirty-seventh annual meet- 

 ing held February 9, 10, 11, 1916 (Proc Ohio Engin. Soc, 37 (1916), pp. 189, 

 figs. 5). — These proceedings contain among others the following special articles: 

 Road Legislation, by C. C. Cass; The Need of Drainage Legislation, by C. L. 

 Bushey ; The Monolithic Construction of Brick Pavements, by M. B. Greenough ; 

 The Concrete Roads of Lake County, by H. P. Cumings; Construction of 

 Bituminous Macadam Roads by the Penetration Method, by H. B. Stone; and 

 Paints for the Protection of Steel Bridges, by J. H. Vance. 



Laws of the State of Idaho relative to public waters, water rights, and 

 irrigation, compiled by A. C. Hindman (Boise, Idaho: Idaho Irrig. and Drain- 

 age Code Com., 1915, pp. 303). — The text of the laws is given. 



Run-ofE and mean fiow of some Texas streams, T. U. Taylor (Bui. Univ. 

 Tex., No. 65 (1915), pp. 25. figs. 10). — Measurements of flow made since 1896 on 

 the Colorado River at Austin and Columbus, Tex., on the Brazos River at 



