RURAL ENGINEERING. 87 



and mixed with milk, daily. On tbe fourth day of medication a distinct im- 

 provement was noted, and after three weeks the animals had apparently recov- 

 ered with the exceittion of a kind of weakness of the spine. 



Combating hog cholera in North America, K. Schern and C. Stance 

 (Ztschr. Infektionskrank. u. Hyg. Ilaustiere, 16 (1914), No. 1-2, pp. 27-55, figs. 

 .}). — A concise statement regarding the methods in use for combating hog cholera 

 in the United States, especially in tlie State of Iowa, including the use of serum 

 and virus serum, and the cost of production. The results obtained in the 

 United States by the use of the scrum both in healthy and diseased herds 

 are discussed and analyzed with mucli detail. 



Combating hog cholera in Germany, K. Schern (Ztschr. InfekUonskrank. u. 

 Hyg. Ilaustiere, 16 (1914), No. S, pp. 139-153). — ^The conditions in Germany and 

 ihe United States iu regard to combating hog cholera are compared and reasons 

 are given why the successes are not so great in Germany as anticipated. The 

 measures in vogue in the State of Iowa, including extension work, are described, 



A guide to the dissection of the blood vessels and nerves of the pectoral 

 and pelvic limbs of the horse, G. S. Hopkins (Ithaca, N. Y.: Author, 1914, PP- 

 54, pts. 7). — This guide was prepared with a view to assisting students in the 

 dissection of the blood vessels and nerves of the pectoral and pelvic limbs. 



Results with the Schreiber protective and curative vaccination against 

 strangles, Kubtzwig (Berlin. Ticrdrztl. Wchnschr., 30 (1914), No. 23, pp. 399, 

 400). — The action of the lymph was found to be variable, but this is accounted 

 for by the fact that mixed infections occur which also produce a variable clinical 

 picture. Subcutaneous injections of 10 cc. of lymph will protect horses exposed 

 to the infection. It is necessary, however, that the animal vaccinated be in 

 good health and that it be kept in the stall for one or two days post vaccination. 

 As a curative vaccination a single injection of 20 cc. does not suffice. 



RURAL ENGINEERING. 



Irrigation investigations, G. E. P. Smith and A. L. Enger (Arizona Sta. 

 Rpt. 1914. pp. 367-S72).—In the Sulphur Spring Valley the flood discharges 

 from Leslie Canyon were measured with the aid of a concrete submerged dam. 

 The deductions from the results obtained are as follows: 



" Flood flows of great size originate occasionally from storms on the valley 

 slopes; flows in the canyon begin suddenly and are of short duration; the rate 

 of loss by seepage in a sandy stream bed is high; comparatively little water 

 from the canyon reaches the river; most of the water spreads out over grass 

 lands and .sinks into the heavy soil, a minor portion of the flow (difficult to 

 estimate) sinks through the stream beds to the main body of ground water, and 

 a small amount also reaches the ground water through gopher holes and joints 

 in the soil. Most of the water flooded over the draws does not sink below the 

 reach of the grass roots." 



The results of measurements of discharge of the Santa Cruz and Rillito rivers 

 are given. 



The conclusions relative to cost of pumping for irrigation, drawn from the 

 results of investigations on the use of oil engines for irrigation pumping are as 

 follows: "(1) The use of Tops in place of engine distillate decreases the cost of 

 pumping about 30 per cent. (2) The cost of pumping on a 40-ft. lift with 4 ft. 

 depth of application varies from $8 to $20 per acre per year, according to 

 whether the plant is used much or little. Under the most favorable conditions 

 the cost of pumped water is no greater than the cost of river water. (3) The 

 cost of pumping on a 100-ft. lift with 4-ft. depth of application varies from 



96619°— Xo. 1—15 7 



