780 



EXPEKIMENT STATION RECORD. 



Irrigation practice in the Sacramento Valley, W. S. GurLFOED (Mo. Bui. 

 Com. Hort. Cal., 4 {1915), No. 3, pp. 123-128).— Jn this article the author dis- 

 cusses briefly the choice of the land, the object of the irrigation, the prepara- 

 tion of the land, and the water delivery system as points which he considers 

 have been the cause of success or failure on the part of irrigators in the valley. 



Report of the proceedings of the eighth annual convention of the Western 

 Canada Irrigation Association, 1914 {Rpt. Proc. Ann. Conv. West. Canada 

 Irrig. Assoc, 8 {WW, pp. 216, figs. 36).— The text of the proceedings is given. 



Biennial report of the state geologist, 1913-14, J. H. Pratt {N. C. Geol. 

 and Econ. Survey, Bien. Rpt. State Geol., 1913-U, pp. n6, pis. ^).— This report 

 includes among other things sections dealing with road-building materials, 

 highways, drainage, and soil maps. 



The St. John Levee and Drainage District of Missouri, R. :M. Strohl 

 iProo. Amer. 8oc. Civ. Engin., 4I {1915), No. 3, pp. 523-51,7, pis. 5, figs. 2).— 

 This paper treats of some of the drainage problems of southeastern Missouri 

 and gives in detail the data necessary to be considered in designing a system 

 for the complete and economical reclamation of large tracts of overflow land. 

 Levees, floodways, drainage ditches, floodgates, storage basins, and siphons 

 are considered and discussed in detail as they are found necessary. The 

 assessment of benefits as provided for under the Missouri laws is also outlined 

 and applied to the case and an effort has been made to show a just and equi- 

 table distribution of the cost of the proposed work. 



The experiment-farm drainage system, F. B. Headley (17. 8. Dept. Agr., 

 Bur. Plant Indus., Work Truekee-C arson Expt. Farm, 191^, pp. 10-12, fig. 1). — 

 The results of experimental drainage work on the project during 1914 are 

 reported (E. S. R., 31, p. 889), certain data being summarized as follows: 



Quantity and salt content of water pumped from the tile-drainage system on the 

 Truckee-C arson Experiment Farm in 1914. 



Month. 



Elec- 

 tricity 

 used. 



Watej pumped. 



Salt content. 



Aver- 

 age. 



Total. 



January 



February. . . 



March 



April 



May 



June 



July 



August 



September.. 



October 



November. . 

 December.. 



Total. 



Kilo- 

 watis. 

 29 

 38 

 76 

 92 

 95 

 74 

 148 

 146 

 63 

 48 

 72 

 40 



921 



Cubicfeet. 



35, 900 



47,120 



94,240 



114,080 



117,700 



91,700 



183,520 



181,040 



78, 120 



59, 520 



89.280 



49; GOO 



1,141,940 



Pounds. 

 2,247,500 

 2,945,000 

 5,890,000 

 7,130,000 

 7,356,250 

 5,728,750 

 11,470,000 

 11,315,000 

 4,882,500 

 3,721,100 

 5,580,000 

 3,099,700 



Per 

 cent. 

 0.249 

 .278 

 .322 

 .305 

 .313 

 .276 

 .290 

 .351 

 ..360 

 .364 

 .304 

 .447 



Pounds. 

 5,598 

 8,187 

 18,966 

 21,747 

 23,025 

 15,811 

 33,263 

 39,710 

 17,577 

 13,544 

 16,963 

 13,856 



71,365,800 



.3216 



228,253 



Methods and cost of levee enlargement with a tower dragline excavator 

 {Engin. and Contract., 43 {1915), No. 19, pp. 411-420, figs. iJ).— This article 

 describes the organization and methods employed in operating a newly developed 

 type of excavator on a 240,000-cu. yd. contract for levee enlargement on the 

 Mississippi River. The excavator used consists of two traveling towers between 

 which a bucket controlled by a slackline cable is dragged back and forth, the 

 propelling power being supplied by a dragline and operated from the main 

 tower. 



