g2 EXPEEIMENT STATION KECOED. [Vol.35 



of the weir box to insure its being submerged for low heads, ar^d care must be 

 used to place the pipe normal to the side of the weir box, and not normal to 



the axis of the box The still box should have inside dimensions of at 



least 1 ft by 1.5 or 2 ft, with such depth as is necessary. . . . 



" The npw irrigation weir may be constructed of lumber, but the design is 

 such that it may be easily constructed of concrete. There would be no diffi- 

 cult form work required for the concrete, and it would make an inexpensive, 

 durable, and satisfactory measuring device, especially if the angle-iron sides 

 and crest of notch were used in connection with the concrete box." 



Fourth biennial report of the Department of Engineering of the State of 

 California, 1912-1914 {Bien. Rpt. Dept. Emjin. Cal., 4 {1912-191 Jf), pp. 2S5, 

 p7s. ^7). —This report reviews the history of engineering work in California an.l 

 deals with the practice in the State on the special subjects of architecture, 

 hydroeconomics, and state roads and highways. Data on water and water- 

 power resources in the State, obtained in cooperation with the U. S. Geological 

 Survey, and data from irrigation investigations, conducted in cooperation with 

 the Office of Experiment Stations of this Department and with the California 

 Experiment Station, are also reported. These include a progress report of ir- 

 rigation investigations by F. Adams for 1912 to 1914 (E. S. R., 29, p. 5SS). 

 a report of an investigation of wells in the Imperial Valley by C. E. Tait, and 

 a report on investigation of wells in the Imperial Valley by W. A. Hutchins. 



Beport on irrigation for the year 1914 (Dept. Int. Catiada Arm. Rpt. 19U, 

 pt. 7, pp. 222, pis. 25, figs. 33).— Reports are included on the Cypress Hills, 

 western Maple Creek, and Calgary irrigation districts ; on the south Saskatche- 

 wan water supply and Oldman River diversion projects; on the Cypress Hills 

 reservoir surveys ; on cost data on reservoir water ; on work in connection with 

 the international waterways treaty; on duty of water investigations; and on 

 principles governing the design and operation of irrigation systems. 



Duty of water experiments and farm demonstration work (Dept. Int. 

 Canada, IrrUj. Ser. Bui. | {1915), pp. 62, pis. 9, figs. 15). — ^This report presents 

 detailed information dealing particularly with practical field irrigation work 

 and general returns on irrigation crop production. Sectional reports are in- 

 cluded on the duty of water at Strathmore and Ronalane, Alberta, alkaline soil 

 conditions, and a general crop report by G. D. AValters; the duty of water at 

 Coaldale, Alberta, by W. H. Snelson, and crop report for the Eastern Maple 

 Creek District, by M. H, French, the V/estern Maple Creek District, by H. R. 

 Carscallen, and the Calgary District, by R. H. Goodchild. 



Report on the climatic and soil conditions in the Canadian Pacific Rail- 

 way Company's irrigation project, western section (near Calgary, Alberta) 

 {Dept. Int. Canada, Iirig. ^cr. Bui. 3 {1915), pp. 2^).— This report includes sec- 

 tions on climatic conditions and on the temperature of water in irrigation 

 canals, by G. N. Houston, and on soils and analysis of water from irrigation 

 canals, ))y F. T. Slmtt. 



In the first section it is concluded that " the climatic conditions in the west- 

 ern section are similar to those in several other places where irrigation has 

 been successfully practiced for many years and, therefore, there is no reason, 

 so far as climate is concerned, why it should not be successful there. ... It is 

 evident that irrigation is very desirable on the western section." 



"With reference to temperature of water it is concluded that "the water 

 applied to crops on the western section is of a higher temperature than that 

 used in many places where irrigation is carried on successfully, [and] is gen- 

 erally of a higher temperature than the rain water. The application of irri- 

 pntion water to the crops in the western section will not result in seriously 

 retarding their growth." 



