482 EXPEEIMENT STATION RECOED. 



for the distribution of irrigation water ; and the selection and cost of a small 

 pumping plant. 



It is stated that a large part of the subject matter has been drawn from pub- 

 lications of the U. S. Department of Agriculture and of the U. S. Reclamation 

 Service. 



Irrigation practice and engineering. — II, Conveyance of water, B. A. 

 Etchea-eeey (Neio York: McGraw-Hill Book Co., 1915, vol. 2, pp. XVIII +364, 

 pis. 31, figs. 82). — This book, the second of the series on the subject (see above), 

 contains the following chapters: 



General features and preliminary investigations to determine the general 

 feasibility of an irrigation project ; procedure in the planning and location of an 

 irrigation system ; hydraulic formulas specially applicable to computations of 

 irrigation canals and structures ; silt problems in the design of irrigation sys- 

 tems ; conveyance losses in canals ; the design of canal cross sections ; canal lin- 

 ings and the prevention of seepage losses ; tunnels, concrete retaining wall canal 

 sections, and bench flumes ; flumes ; and pipes and inverted siphons. 



Irrigation and settlement in America, A. D. Lewis (Pretoria: Govt., 1915, 

 pp. 258, pis. 38, figs. 54; rev. in Engin. Rec, 12 (1915), No. 3, pp. 84, S5).— This 

 book describes a number of western irrigation projects, taking up for each 

 project the following points: Physical conditions, outline of the scheme, engi- 

 neering works of interest, soil and agricultural conditions, settlement and 

 cost, and distribution and duty of water. The chapters deal with the Belle 

 Fourche, Huntley, Shoshone, Boise, Snake River, Minidoka, Twin Falls north 

 and south, Oakley, Salmon River, Great Basin, Salt Lake, Truckee-Carson, 

 Modesto-Turlock, Fresno, Redlands, Imperial Valley, Yuma. Salt River, and 

 Rio Grande schemes. 



Subtopics and appendixes deal with sugar-beet cultivation, crop experiments 

 at Logan. Utah, Californinn Irrigation, how the federal and state governments 

 help settlement, and the Reclamation and Carey acts. 



Maintenance of irrigation systems, F. H. Neweix (ircsf, Engin., 6 (1915), 

 No. 4, pp. 147-151). — This article discusses the proper segregation of expendi- 

 tures for construction, maintenance, betterments, repairs, and operation. 



Selection of pumps for irrigation, C. Remschel (Jour. Electricity, 35 (1915), 

 Nos. 11, pp. 196, 197; 12, pp. 214-217, figs. 6). — Suggestions on the principles of 

 pump selection for irrigation pumping are given, with special reference to 

 centrifugal, deep-well, power-plunger, and air-lift pumps. 



Centrifugal pumps, R. L. Daugherty (New York: McGraic-Hill Book Co., 

 1915, pp. X+192, figs. Ill; rev. in Power, 42 (1915), No. 8, p. 284; I'l Engin. 

 News, 74 (1915), No. 25, pp. 1172, 1173).— It is the purpose of this book "to 

 illustrate and explain all the essential features of construction of modern 

 centrifugal pumps, to present a clear and intelligible theory which shall be 

 entirely general in its nature, to explain by this theory the pump characteristics 

 and connect the theory with the actual facts, to present a thorough discussion 

 of the factors affecting efliciency, to consider the characteristics of various 

 types of pumps and their suitability for different services, to compare centri- 

 fugal with displacement pumps, and to present various general laws and 

 factors leading to a better appreciation of the field of service of such pumps 

 and a better means of selecting the proper combination. . . . The material 

 is based upon a study of the performances of 123 turbine and 51 volute centri- 

 fugal pumps. , . . The field covered by them ranged from 1 to 11 stages, 

 heads from 7 to 1,843 ft., capacities from 108 to 132,000 gal. per minute, speeds 

 from G2 to 20,000 r. p. m., and efflciencies from 30 to 87 per cent. A consider- 

 able portion of the work Is also founded upon the analysis of tests made by 

 the author upon a volute pump and a turbine pump for both of which all 



