1000 EXPERIMENT STATION RECORD. 



Irrigation in the United States, E. Mead ( U. S. Dept. Agr., Office uf Experiment 

 Stxtftons Bui. 105, pp. 4~, pl-^- l~,fi'J- !)■ — The testimony of the expert in charge of 

 irrigation investigations of this Department before the United States Industrial Com- 

 mission June 11 and 12, 1901. This testimony "presents a review of the irrigation 

 situation in the United States, including not only the arid region of the West, but 

 also the humid sections of the South and East. The testimony also deals Vjriefiy, but 

 in some detail, with the practical aspects of extending public aid to irrigation, either 

 through the State or national governments." 



Irrigation practice among fruit growers on the Pacific Coast, E. J. Wickson 

 ( ['. S. Dept. Agr., Office of E.rperiment Stutmis Bui. 108, pp. 54, pis. 10, figs. 7). — This 

 bulletin, prepared under the direction of Prof. Elwood Mead, expert in charge of 

 irrigation investigations of this Office, presents the results of a special investigation 

 into the conditions, extent, and methods of irrigation as practiced among fruit 

 growers on the Pacific Coast. 



Irrigation possibilities of the Iiower Colorado River, J. B. Lippincott ( For- 

 estry and Irrig., 8 {1902), No. 4, PP- 153-159, figs. 4)- 



A complete irrigation system, A. P. Davis ( Twentieth Century Farmer, 1902, 

 No. 69, pp. 1, 2). — An argument in favor of irrigation development under national 

 control. 



Earthen reservoirs, A. P. Davis {Forestry and Irrig., 8 {1902), No. 3, pp. 121- 

 123). — Brief directions for the construction of such reservoirs. 



Hydrography {Twenty-first Ann. Rpt. U.S. Geol. Survey, 1899-1900, pt. 4, pp. 

 768+XI, pis. 156, figs. 329). — This includes a report by F. H. Newell of progress of 

 stream measurements for the calendar year 1899 similar to those of previous years 

 (E. S. R., 12, p. 797), a preliminary description of the geology and water resources 

 of the southern half of the Black Hills and adjoining legions in South Dakota and 

 Wyoming, by N. H. Darton; and a paper on The High Plains and their utilization, 

 by W. D. Johnson. "The first paper discusses the results of measurements of the 

 flow of various streams in different parts of the United States, the data being i)re- 

 sented in diagrammatic form as well as by statistical tables. The arrangement 

 adopted for this progress report is a geographic one, beginning in the extreme north- 

 eastern part of the United States and ending in the extreme southwestern." The 

 second paper deals more particularly with the artesian water supply of the region 

 studied and "the results obtained have interest and value not only to the citizens in 

 the vicinity of the Black Hills, but to a still larger class who, in all parts of the 

 country, are seeking an underground supply of water." The article also treats of 

 the topography, geology, soils, mineral resources, climate, and timber of the region. 

 The third ])aper gives "the result of field work begun in 1896 in western Kansas and 

 extending over portions of Nebraska, Colorado, Oklahoma, and Texas. " The article 

 discusses the general characteristics, origin, and structure of the High Plains, the 

 deficiencies of climate, the necessity for irrigation, and the impossibility of general 

 irrigation on account of the insufficiency of the water supply. 



Relative velocity in streams, D. T. Smith {Nature ^London}, 65 {1901), No. 1678, 

 p. 174)- — The author claims "that friction against the bed increasing progressively 

 from the middle to the margin divides every stream longitudinalh' into two halves, 

 which roll spirally toward each other. This spiral being determined l)y the friction, 

 its helix rises with the speed, or the increased friction depending on the speed, which 

 in turn depends on the slope of the channel. It follows that beyond a certain speed 

 the stream loses all the momentum gained by its fall in beating with the two out- 

 ward moving undercurrents against the channel walls. In this way the stream attains 

 its kinetic equilibrium. " 



Public water supplies {Ohio State Bd. Healtli lipt. 1899, i>p. 88-206, 451-732, 

 charts 57). — Reports on the water supplies for various towns in Ohio and on the 

 measurement of the flow of the rivers of Oliio and their value as sources of public 

 ■water supply. 



