290 EXPERIMENT STATION RECORD. [Vol. 40 



Contagious abortion questions answered, F. B. Hadley (Wisconsin St a. Bui. 

 296 (1918), pp. 86, figs. 8). — Information relating to this disease in rattle is 

 given in the form of questions and answers. 



Contagious abortion in cattle, A. Tttktt.br (Rhodesia Agr. Jour., 15 (1918). 

 No. 3, pp. 268-278). — A review of the present status of knowledge of this dis- 

 ease, the occurrence of which in South Africa is said to have heen known for 

 a considerable time, although its identity with the European disease was demon- 

 strated only a few years ago. 



Cattle scab and methods of control and eradication, M. Imes (U. S. Dept. 

 Agr., Farinas' Bui. 1017 (1918). pp. 29, figs. 15).— The nature and habits of the 

 scab mites, the symptoms caused i>y each species, methods of distinguishing the 

 different kinds of cattle scab, and means for eradication by dipping or spray- 

 ing are given in popular form. 



Coccidia in the intestines, red dysentery of cattle. — Observations on 

 Eimeria zurni-rivolta. B. Gaixi-Valebio (Trans, in Vet. -lour., ?.} (1918), No. 

 516. pp. 119 I '•■'>. The author's conclusions are as follows : 



"Coccidian dysenb ry of cattle is due p. a specific coccidluin, /■;. zurni-rivolta. 

 It is chiefly transmitted by ailing animals in stalls, stables, and sheds. Infected 

 abodes not disinfected or Insufficiently disinfected maintain infection for ages. 

 For a good prophylaxis the following are necessary (a) a strong sterilizing 

 therapy of the sick animals associated with their Isolation, (b) the destruction 

 of their feces and disinfection of the standing (sulphuric acid), and (c) the 

 draining of pastures and distribution of good potable water." 



Report of experiments on immunizing against hog cholera. L. I,. LEWIS 

 and C. H. McF.i.koy (Oklahoma 8ta. Bui. tl9 (1918), pp. 8-15).— The Investiga- 

 tions reported included experiments to prove whether hogs given the simul- 

 taneous treatment will or will not be a source of infection for hogs that have 

 not been vaccinated, to test the effect of desiccation on the virulence of hog 

 cholera virus, to determine how long immunity will last in young hoj 

 they are Immunized against hog cholera by the simultaneous method, and t" 

 determine the period of Immunity In bogs receiving only the serum treatment 

 From the results obtained the following conclusions are drawn: 



Hogs given the simultaneous treatment for hog cholera will probably not be 

 a source of danger when put with hogs that have not been vaccinated. No 

 immunity is produced by using hoe cholera virus dried for such a length of 

 time that it will not produce the disease. Xoung pigs three weeks old or older 

 may be successfully immunized by the simultaneous treatment Probably a 

 still higher immunity may be acquired by an additional inoculation of 0.5 cc. 

 of virus in about two weeks after the simultaneous treatment has been ad- 

 ministered. Serum-alone treatment will not give hogs immunity for more thai, 

 three or four weeks. 



RURAL ENGINEERING. 



Surface water supply of the United States. 1915. IX. X. XII B. XII 

 (l . 8. '-'co/. sun-. ii. Water-supply Paper, 1918, No*. 409. pp. 2S6+\\\n. pis. 

 2; 410, i>i>. 255+XL. pis. 2: 418, pp. 215+XLIX, pis. 2: 414, pp. 182+XLIX, pit. 



2). — These papers deal with measurements of flow made on streams during the 

 year ended September 30, 1915, as follows : Paper 409, Colorado River Basin : 110, 

 The Great Basin; -lb".. North Pacific Drainage P.asins— Snake River Basin; 41 I 

 North Pacific Drainage P.asins — Lower Columbia River and Pacific Drainage 

 Basins in Oregon. Paper 409 was prepared in cooperation with the States oi 

 Arizona, Nevada. Ft ah, and Wyoming: 410 with Utah, Nevada. California, and 

 Oregon; 413 with Idaho, Oregon, Nevada, and Washington: and 414 with Or 



