AGRICULTURAL ENGINEERING. 521 



Professor Xagle reports as a general average of all of his measurements that the 

 .Brazos River carries " 1.2 per cent of silt by volume at the end of one week's settle- 

 ment and 0.9 jier cent at the end of one year's settlement. He thinks the Brazos 

 fairly represents the streams of the State of Texas." 



Professor "Waters reports a decided residual benefit to strawljerries and asparagus 

 at the ]\Iissouri Station from water applied the previous year. Observations at the 

 Wisccnsin Station on the residual effect of irrigation in the previous year show that 

 irrigation may result in a decrease in yield the second year if the soil is not manured. 



Professor Voorhees' report for 1902 is a study of methods of distributing and 

 applying water. He found that open ditches lost large percentages of the water 

 turned into them. Tarred canvas used as a ditch lining proved very effective and 

 not expensive. Clay thrown in the water and puddled did not do so well. Pro- 

 fessor Voorhees also gives the records of wells in several sections of New Jersey, in 

 order to show the i:)ossibilities of this source of water supply. 



Mr. Smith's report on pumping water in the Hawaiian Islands gives valuable 

 data on the efficiency and cost of operation of various kinds of pumps. 



Plans of structures in use on irrig-ation canals in the United States ( ['. S. 

 Dept. Agr., Office of Experiment Stations Bui. ISl, pp. 51, pih. 22). — This is an album 

 of 22 plans of irrigation structures designed by leading irrigation engineers of the 

 United States. The plates Avere made from drawings exhibited at the Paris Exposi- 

 tion in 1900 and the Buffalo Exposition in 1901. 



Storage of -water on Cache la Poudre and Big Thompson rivers, C. PI Tait 

 ( r. H. Dept. A(jr., Offce of E.ipernnent Stations Bui. 134, pp- 100, ph. o,figs. 10). — This 

 bulletin gives details of areas, capacities, and construction of reservoirs in northern 

 Colorado, in the watersheds of the Cache la Poudre and Big Thompson rivers, and 

 the profits froni their use. 



Storage reservoirs on Stony Creek, California, B. Cole ( Water Supply and 

 Irrig. Pap>ers, U. S. Geol. Surre)/, Xa. S6, pp. 02, pis. 16, figs. 3S). — "The paper treats 

 of the possibilities of reclaiming by irrigation large areas of land in the vallej' of 

 Stony Creek, a tributary of the Sacramento River, and on the west side of the Sacra- 

 mento Valley, which have been cultivated by dry farming, Ijut on which irrigation 

 may apparently be introduced with much advantage." 



From the investigations reported the conclusion is drawn that "several commer- 

 cially valuable reservoir sites exist in the water shed of Stony Creek and its tribu- 

 taries. The annual run-off is sufficient to fill these reservoirs in years of average 

 rainfall. In the case of the 31111 Site reservoir the supply is many times greater than 

 the capacity of the reservoir. There would probably not be sufficient run-off to fill 

 the Briscoe Creek and Little Stony Creek reservoirs in years of A'ery low rainfall. . . . 

 The conditions are favorable for long life of the reservoirs on account of the small 

 amount of silt and debris carried by the streams." 



Report of progress of stream measurements for the calendar year 1902, 

 F. H. Newell ( ^yater Supjply and Irrig. Papers, U. S. Geol. Survey, Xos. 82, pp. 199; 

 83, pp. 304, figs. 7; 84, pp. 200, figs. 2; 85, pp. 2.50, figs. «>).— These 4 papers give the 

 results of hydrographic measurements made during the year 1902, the first 2 cover- 

 ing the territory east of the Mississippi and the last 2 that west of the Mississippi. 

 "These papers contain, for the various gauging stations, the original data as collected, 

 and the results obtained from the discussion of these data, also such other informa- 

 tion as is of interest in hydrographic studies." 



The agricultural importance of collecting and utilizing the waters of 

 mountain areas, F. W. Toussaint {Fii]iling's Landtr. '/.tg., 52 {1903), Ao. 19, 

 pp. 689-695). — A general discussion of this suljject. 



Drainage and the agricultural sanitation of soils, L. Faure {Drainage et 

 assainissetnent agricole des terres. Paris: Ch. Bcranger, 1903, pp. XIV -^ 279, figs. 120, 

 dgms. 4)- — Under the head of drainage the removal of water 1)y means of tile drains 



