RURAL ENGINEERING. 391 



(4) running water for but a short time in one place, as loss soon occurs from 

 deep percolation, (5) the use of a small amount of water for each irrigation, 

 since the storage capacity of the soil is very low, (6) the frequent application of 

 water to maintain an adequate supply for plant growth, as the small quantity 

 that it is possible to store in the soil is quickly taken up by the plants or evapo- 

 rated, and (T) using a comparatively large stream of water while irrigating, 

 in order to cover the land as quickly as possible." 



Irrigation of the plains of Kep, Vol, Bao-Loc, Pins, and Phu-Lang-Thong, 

 UouEN {Bui. Leon. Iiidoclihte, n. scr., 11 (191/,), No. 109, pp. 511-5J,0, pi. 1).— 

 This article describes the irrigation works, including dams, storage reservoirs, 

 canals, etc., and reports briefly the general results obtained in the irrigation of 

 rice. It is stated that the net benefit realized from the irrigation of rice in 

 Kep has amounted annually, in round numbers, to about $38 per hectare ($15.40 

 per acre), thus justifying the extension of tlie irrigation works. 



Water regulation in the different water districts of Java and Madoera 

 (VersUig Burger}. Opcnh. Werkoi Xrderlaud. Indir, 1911, pt. Jf, B. Bijlage II, 

 pp. IV-\-llJf). — This report covers developments in irrigation, the distribution 

 and u.5e of irrigation water, conveyance and diversion of water, and water 

 regulation. 



Surface -water supply of Missouri River basin, 1913 {U. 8. Geol. Survey, 

 Water-Supply Paper 356 (1915), pp. 291, pis. 2). — This report, prepared in 

 cooperation with the States of Montana and Nebraska, presents the results of 

 measurements of flow made on the Missouri River and its tributaries during 

 1913. 



Surface water supply of the \ower Mississippi River basin for 1913 (U. 8. 

 Geol. Survey, Water-Supply Paper 357 (1915), pp. 86, pis. 2). — This report, 

 prepared in cooperation with the State of New Mexico, presents the results of 

 measurements of flow made on the Arkansas, Yazoo, Red, and Canadian river 

 basins in the lower Mississippi River basin in 1013. 



Water resources of the Rio Grande basin, 1888 to 1913, including surface 

 water supply of the western Gulf of Mexico basins, 1913, R. Follansbee, 

 H. J. Dean, et al. (U. S. Geol. Surrey, AVatcr-Supphj Paper 353 (1915), pp. 

 725, pis. 3). — This report describes the general features of the Rio Grande basin 

 and presents the results of measurements of stream flow made in the basin and 

 In the western Gulf of Mexico basins. The results of studies of precipitation, 

 evaporation, and sedimentation as factors in determining the value of reservoir 

 sites for the storage of flood waters are also presented. 



Report of progress of stream measurements for the calendar year 1913, 

 P. M. Saudek, G. H. Wiiyte, and G. R. Elliott (Dept. Int. Canada, Scss. Paper 

 25c (1914), pp. V-\-JtlJt, pis. 20). — This report presents the results of measure- 

 ments of flow made on streams and irrigation ditches in Alberta and Saskatche- 

 wan during 1913. 



Pumping water by means of steel windmills, B. MiJLLER (Fordertechnik, 7 

 (1914), No. 13, pp. 161-167, figs. 15; abs. in Wasser u. Abicasser, 9 (1914), No. 1, 

 pp. 9, 10). — This article gives considerable tabular data regarding wind veloci- 

 ties, wind powex", power of windmills for pumping purposes, and data to be used 

 in determining the size and location of the windmill and the size of suction 

 and pressure pipe for pumping under certain given conditions, esiiecially from 

 deep wells. In comparative tests of windmill power and electrical and gas 

 engine power for meadow draining in east Prussia, using a vertical submerged 

 centrifugal pump, it was found that the exiiense of operation over a long period 

 of time was much the least with wind power, followed in order by electrical and 

 gas engine powers. 



