848 EXPERIMENT STATION RECORD. 



" Wbeu the drains have been less than 500 ft. in length we have found 3-in. tile 

 ample for draining the ground quickly and thoroughly, but for longer runs we have 

 found it necttssary to use 4-iu. for the lower part of the drains, and this has been of 

 sufficient size for the extremities of the longest runs, about a quarter of a mile. The 

 tile have been put into the ground to an average depth of 3| ft. and the expense of 

 the work, including the cost of tile, digging the ditches, laying and covering tlie 

 tile has been 51 cts. per running rod. Three-inch tile have cost, including freight, 

 about $18 per thousand feet, which is nearly three times the cost of such tile in Illi- 

 nois and other Northern States. . . . 



"The station lields which have been tile drained have increased fheir annual yield 

 fully 50 per cent as a result of the work, and such drains will be found a profitable 

 investment on all soils which remain wet until late in the spring on account of their 

 compact subsoil, or which are rendered heavy and 'sour' by continued seejiage from 

 surrounding hill lands." 



The artesian v^ells of southern Wyoming, their history and 

 relation to irrigation, J. D. Conley ( Wyoming Sta. Bui. J20, pp. 87- 

 122., Jigs. 2). — The couditious necessary for an artesian supply are 

 exiilained; the extent of artesian irrigation in San Bernardino, Cali- 

 fornia, and the San Luis Valley, Colorado, is noted; and a detailed 

 account of the artesian wells of southern Wyoming, principally in the 

 vicinity of Laramie and Eawlins, is given, including data relating to 

 cost, flow, strata pierced, and analyses of the water. 



In an appendix is given the official analyses of water from artesian 

 wells sunk by the Union Pacific Railway Comjiany in Wyoming. 



Brush and stone drains {Cult, and Country Gent., 1S95, Feb. 7, p. 103, figs. 2). — 

 Popular directions for the construction of these drains. 



Siibirrigation {Rural New Yorker, 1S95, Feb. 2, p. 66). — A system of subirrigation 

 by nu'aus of tile drains is described, which is claimed to overcome most of the 

 objections to irrigation by means of tiles. 



The trials of oil engines at Cambridge {Jour. Boy. Ayr. Soc. England, 3d ser., 5 

 {tSD4), No. 20, pp. 696-73S,figs. 25). 



The animal as a prime mover, II, R. H. Thurston {.Jour. FranMin Inst,, 139 

 {1895), No. 830, pp. 100-121).— A. study of power and efficiency. 



Electricity as a motive force for ploAvs, Ringleman {Jour. Ayr. Prat., 59 {1895), 

 No. 3, pp. 89-99, figs. 5). 



Irrigation principles, W. Hall {Irriyation Aye, 8 {1895), No. 2, pp. 45-47; No. 3, 

 pp. 83-85), 



Beet harvesting machine, Beiiuens {Landw. TVochenbl. Scltles, Hoist., 45 {1895), 

 No. 4, p. 57,fiys. 2). 



Petroleum motor in agriculture, Brutsciike {Wochenscltr. Pom. bkon, Gcs., 25 

 {1895), Ao. 2, pp. 14, 15). 



Results of trials of potato diggers, F. Sciiotte {Jahrb. deut. landw, Ges., 9 

 {1894), pp. 395-410, figs. 15). 



Machines for peeling potatoes, F. Schotte {Jahrb. deut. landw. Ges., 9 {1894), 

 pp. 389-394, figs. 4). 



Plans for a piggery, Malochowski {Jahrb. deut. landw. Ges., 9 {1894), pp. 411-416, 

 fig^- 3). 



