EURAL ENGINEERING. 291 



irrigation pumps and a table of test results is given showing tlie total cost of 

 fuel per brake horsepower, for a season of 80 days, of steam and gasoline as 

 compared to kerosene. Data derived from the operation of 3 tji^es of steam 

 engine, 1 type of gasoline engine, and 1 type of kerosene engine, ranging from 

 30 to 100 horsepower, show that the cost of fuel for the kerosene engines was 

 approximately one-half that for the gasoline engines, and approximately two- 

 thirds that for the steam engines. 



Irrigation laws of the State of Nebraska in force July 7, 1911, D. D. Price 

 {Lincoln, Nebr.: Bd. IrrUj., Uiylucays, and Drainage, JOll, pp. 72). — A com- 

 pilation. 



Triennial revenue report of the public works department, irrigation 

 branch, Bengal, for the 3 years ending 1910—11, T. Butler {Trien. Rev. Rpt. 

 Pub. Works Drpt., IrrUj. Branch, Bvnijal, 1910-11, pp. III+IOJ,, pis. i6).— This 

 report gives tabulated statements showing the areas irrigated, the capital 

 outlay, and financial results of the canals in Bengal, diagrams illustrating the 

 same, and tables of rainfall data, water duty data, crop experiments, and 

 values. 



Fifteenth biennial report of the state engineer of Colorado, C. W. Com- 

 STOCK {Bicn. Rpt. .state IJngin. Colo.. !■', (1!)()!)-I0), pp. J.',!, pl.s. ij).— This re- 

 port covers the existing physical and financial status of water supply and irri- 

 gation, road, and bridge works in Colorado in 1909-10, and includes the reports 

 of division irrigation engineers, tabulated data from the reports of water com- 

 missioners, and a preliminary hydrographic report of the Yampa Basin. A 

 large amount of tabulated, discharge data from hydrographic investigations of 

 the principal rivers of the State is presented. 



First biennial report of the State Road Commission of Utah, 1909—10 

 (Bien. Rpt. State Road Com. Utah, 1 {1<)0!)-10), pp. 70, pis. 21, figs. //).— This 

 report, embodying reports of the 4 state road commissioners, states the progress 

 of road imi)rovement and construction in Utah in 1909-10, discusses the 

 methods in use, gives a detailetl account of the cost in each county, and makes 

 recommendations for modifying tlie road statutes of the State relative to 

 methods of improvement, construction, and administration. 



The combined reports of all counties show that during 1909-10, 125.424 miles 

 of road have been graded, surfaced with gravel or stone, or reconstructed of 

 sand clay at a total cost of $100,631. 



Preliminary report on the road materials and road conditions of Oklahoma, 

 L. C. Snider {Okla. Gcol. Swrvey Bui. 8, 1911, pp. XIII+191, pis. 12, figs. 26).— 

 This bulletin describes the meteorology, geography, and rock formations of 

 Oklahoma, the general conditions and road laws, the distribution of road 

 materials throughout the State, and the physical and chemical properties of 

 road materials, and discusses the financial and social advantages of good roads 

 in the different localities. 



The construction and maintenance of earth and sand-clay roads are discussed 

 under the subheads of location, surface and underdrainage, bridges and cul- 

 verts, and machinery used. Paved roads are discussed under the subheads of 

 macadam, brick, stone-block, and bitumens. The distribution of road materials 

 is given by counties, and their distribution rind the road conditions are dis- 

 cussed by dividing the State into 3 districts, the eastern district, the western 

 district, and the southern or cretaceous district. The road materials of the 

 State are classified in general as sand, clay, gravel, bitumens, coal-mine clinkers, 

 igneous, sedimentary, and metamorphic rocks. 



Use of bitumens for roads, A. H. Blanchard (Municipal Jour., 32 (1912), 

 No. 20, pp. 750-753). — ^This is a paper read before the American Association for 

 the Advancement of Science. A review is given of the use of bituminous mate- 



