RUEAL ENGINEERING. 185 



Atoxyl was also administered subcutaueously, commencing from the second to 

 the fourth day of the disease, to eight horses in daily doses of 0.5, 0.75, and 1.0 

 gm., resi>ectively, and in a majority an improvement resulted. In two cases re- 

 ceiving 0.75 gm. on the fourth day, it was necessary to continue the treatment 

 for four days. 



Four horses were treated by a single subcutaneous injection of 4 gm. of 

 atoxyl dissolved in 75 cc. of water, but uns;itisfactory results were obtained 

 with three of the horses. Three horses were treated by administering 4 gm. 

 of atoxyl in 100 cc. of water intravenously ; their temperature fell below 40° C. 

 on the second, third, and fourth days following, respectively. 



Serodiagnosis of pregnancy in mares, C. F. Briscoe and E. M. Ranck 

 {Mississippi 8ta. Tech. Bui. 5 (1014), pp. 8). — The Abderhalden test was studied 

 for diagnosing pregnancy in mares. The report is prefaced by a brief descrip- 

 tion of the test (E. S. R., 31, p. 278) and the sources of error which may be 

 encountered in conducting it. About 10 animals were tested, including a 

 Percheron stallion and an unbred Hackney filly, from which blood was collected 

 before and two hours after feeding. The reactions were positive in all cases 

 except that of the stallion, but the fact that the filly gave a test before feeding 

 is attributed either to leaks in the diffusion thimble or to her having been 

 accidentally in foal. The conclusions reached were as follows: 



"The serodiagnosis of pregnancy is applicable to mares; and with due pre- 

 cautions is fairly reliable. To make the test reliable, it is necessary to control 

 each individual test. Precautions must be taken to guard sources of error 

 from bacterial contamination and from digestive products in the blood of the 

 animal tested. The test is practicable for scientific experimentation and prob- 

 ably in the breeding of high-priced stock." 



The work is being continued and the authors hone to include in the tests other 

 animals, as the cow, goat, and pig. 



Manual of military farriery, L. A. Beltran (Manual del Uerrador Militar. 

 Havana, Cuba, 1914. pp. V-{-182, figs. lOS). — This is a handbook on horse- 

 shoeing. 



A new nematode, E-ictularia splendida, from the coyote, with notes on 

 other coyote parasites, M. C. Hall {Proc. U. 8. Nat. Mus., 46 {1914), pp. 75- 

 84, figs. 6). — The parasite here described as new was collected from the small 

 intestine of Canis ncbracoisis, at Amo,jiear Colorado Springs, Colo. A key is 

 given for the separation of this from other species of the genus, and it is 

 pointed out that the parasites of the coyote have practically the same consid- 

 erable economic importance that those of the dog have. 



RURAL ENGINEERING. 



Irrrigation and soil-moisture investigations in western Oregon, W. L. 

 Powers (Oregon Sta. Bui. 122 (1914), pp. 3-110, figs. 2;J).— This bulletin reports 

 a continuation by the station, and on broader lines, of the preliminary investi- 

 gations begun in cooperation with this Office (E. S. R., 23, p. 393). The experi- 

 ments were extended to include studies of the effect of irrigation upon soil- 

 moisture movements, moisture consumption by crops, best time and amount of 

 application for different crops, and costs and profits, and covered a period of 

 four years. The main puriwse was to determine " the value of irrigation for 

 ' increasing and insuring productiveness ' of the agricultural lands in the semi- 

 arid Willamette Valley and other similar valleys of western Oregon." 



Evaporation from the water surface from April 30 to October 1 averaged about 

 24 iu. and the average rainfall for this period was 5.52 in. Under field condi- 



