194 EXPERIMENT STATION RECORD. 



"(4) Reservoir ejml)ankments shrmld he l)etter protected from damasre bv wave 

 action. 



"(5) Reservoir outlet? should lie inspected annually. 



"(6) Exchange of water facilitates its distrihution and amplifies its use. 



"(7) Accurate measurement is essential in the exchange of water. 



"(8) The concert of action in the exchange of water apjiears to have lessened 

 the number of legal conflicts. 



"(9) Laws based on the outcome of customs are usually well founded. 



"(10) Greater economy in the application of water is attained by alternating 

 rather than prorating in times of scarcity, both among canals and among users from 

 canals." 



Seepage gains and losses, 1^. G. C.\rpexter ( ('olorailo Sta. Rpt. 1000, pp. 135- 

 140). — This is a continuation of previous observations (E. S. R., 11, j). 394) on the 

 Cache la Poudre, Rio Grande, Conejos, and Uncompahgre rivers, and Big Thomp- 

 son, Little Thompson, St. Vrain. Left Hand, Boulder, South Boulder, Clear, and 

 Bear creeks. 



Conveyance of water in irrigation canals, flumes, and pipes, 8. Fortier 

 ( Wiitfi- Siipph/ am} Irrltj. Paper-'', l. S. Geol. Siirreji. Xn. 4-^. pji. S'l, ph. 1.'), fig.?. 27). — 

 The experience of the author in the construction of irrigation canals and related" 

 hydraulic works used in the reclamation of the arid lands is given under the follow- 

 ing heads: Irrigation canals, including location, standard cross sections, grades, oper- 

 ating canals in winter, aquatic plants in canals, and flow of water; wooden flumes, 

 including flume lining, framework, protection of ends, carrying capacities, and semi- 

 circular flumes; stave pipe, including lumber for staves, steel for bands, construction, 

 location of pipe line, dura1)ility, use, and t-ost; riveted-steel pipe: and cast-iron pipe, 

 including history, manufacture, dimensions and weights, testing and inspecting, laj'- 

 ing, durability, and cost. 



The Austin dam, T. U. Taylor ( Water Supphi arid Jrrir/. Papers, V. S. Geol. Sur- 

 vey, So. 40, pp. 52, piK. 16, figs. 12). — "In this paper the author describes the prelim- 

 inary projects, the construction of the dam, the difficulties encountered, the silting 

 up of the storage reservoir, and, finally, the failure of the structure and the probable 

 causes which led to the catastrophe. The attempt is made to present these facts 

 from the engineering .standpoint." 



Inter or sub irrigation, H. P. 8tiles [CaUfornia Cult., 16 {1901), No. 4, pp. 49, 

 52, .>3, figs. 3). — This is a discussion of Woodbridge's system of inter-irrigation, with 

 a description of a subsoil plow devised by the author for breaking uj) hardjian and 

 preparing the soil of orchards for irrigation. 



The organization of irrigation farming, W. Toissaixt (Dent. Lnmbr. Presse, 

 28 {1901), No. 17, p. 135). 



BiBservoirs for irrigation, water power, and domestic supply, J. I). Schuy- 

 ler (A>»' York: .John Wile;/ <i- Som, 1901, pp. XVIII-^414, ph. 80, p>Jam25,figs. 130).— 

 This is "an account of various types of dams and the methods and plans of their 

 construction, together with a discussion of the available water supply for irrigation 

 in various sections of arid America; the distribAition, application, and use of water; 

 the rainfall and run-off, the evai^oration from resei'voirs; the effect of silt upon 

 reservoirs, etc." It contains chapters on rock fill, hydraulic fill, masonry, and 

 earthen dams, natural reservoirs, and projected reservoirs. 



Irrigation laws of the Northwest Territories of Canada and of Wyoming, 

 J. S. Dexxis, F. Boxd, and J. 'SI. Wilsox {U.S. Dept. Agr., Office af Experinicitt Sta- 

 tions Bui. 96, pp. 90, vis. 6).— This bulletin "gives the texts of the irrigation laws of 

 the Northwest Territories of Canada and of Wyoming, with the regulations, forms, 

 and methods of procedure adopted in their administration and discussions of the 

 principles underlying the lav.^s, and the methods followeil in their enforcement." 



