AGRICULTURAL EMGINEERTNG. 1135 



decline in value that huf taken place since the establishment of modern methods of 

 manufacturing, trade, and transportation. 



•'The chapter dealing with public water sup^jlies i-omprises unusually complete 

 information with reference to the sources, equipment, and value of the systems that 

 were installed during the latter part of the last century." 



Irrigation in India, H. ]\I. Wilson ( U. S. GcoL Survey, Water Supply and Irrig. 

 Paper No. 87, pp. 238, pJ^. 27, figs. 66). — A second edition of this report revised and 

 brought up to date. "The most important feature of the revision is the bringing of 

 all the financial and statistical data concerning the more important works in each 

 province up to 1901, the date of the last official Indian reports. 



"At the close of 1901 the area of India, including native States, was 1,559,603 square 

 miles, the total population was 294,266,701, and the total expenditure upon all classes 

 of irrigation works by the government of India had been $337,850,000. In the year 

 1900-1901 the expenditures on account of irrigation amounted to $11,500,000 and the 

 revenues to $12,075,000, showing a i^rofit of 7.5 per cent on the capital outlay for 

 construction. The total area cultivated in India the same year was 180,151,093 acres, 

 and the total area irrigated was 18,611,106 acres, or, counting areas double cropped 

 or those irrigated more than once in a season, the area irrigated was 33,096,031 acres. 



"The estimated value of the irrigated crops in 1900-1901 was $150,000,000, and of 

 these it is interesting to note that the area under cultivation in wheat amounted to 

 over 16 million acres, and in cotton to over 8j million acres, and that the total value 

 of the latter crop alone was $52,773,000." 



Notes on irrigation in the valley of the Tumbez {Donnees sur les irrigations de 

 Id rallce de Tinnhi-s. IAuki, Peru: Min. Ayr. et des Truvaux Prd>Jics, 1902, pp. 28, pis. 

 ■:!, maps 2). 



Address of Hon. Joseph W. Hunter, State Highway Commissioner, 

 delivered at annual meeting of State Board of Agriculture, January 28, 

 1904 (Pennsylrania State Vept. Ayr. Bid. 121, pp. 15) — This address discusses the 

 act of the State legislature of April 15, 1903, creating a department of public high- 

 ways and explains what has already been done under its provisions. 



Historic highways of America, A. ^. .IIulbert {Cleveland, Ohio: Arthur H. 

 Clark Co., 1904, vol. 8, pp. 237, pis. 2, maps 4; 1903, vol. 9, pp. 220, maps 3; 1904, vol. 

 10, pp. 207, pis. 3, maps 2; 1904, vol. 11, pp. 201, pis. 7).— These volumes deal with 

 the military roads of the Mississippi Basin (the conquest of the old Northwest), the 

 waterways of westward expansion (the Ohio River and its tributaries), the Cumber- 

 land road, and pioneer roads and experiences of travelers. For a notice of previous 

 volumes of this series see E. S. R., 15, p. 415. 



Tenth annual report of the commissioner of public roads for the year 

 ending October 31, 1903, H. I. Budd {Somerville, N. J.: The Unionist Gazette 

 Asaoc, 1904, pp. 262, ph. 40, map 1). — The report includes descriptions of the roads 

 built in 1903, with statements of their cost, the text of the public roads act of April 

 1, 1903, and the standard specifications for different kinds of roads. 



The international good roads convention {Engineer. Neivs, 51 {1904), No. 21, 

 pji. 494-496). — An account of the convention held at St. Louis May 16-21 under the 

 auspices of the Xational Good Roads Association. 



Oil engines for agricultural purposes, W. W. Beaumont {Jour. Bd. Agr. [Lon- 

 don], 10 (1904), Ao. 4, ])p. 4S5-460, fiyx. 18). 



Systems and methods of mechanical refrigeration, S. H. Bunnell {Enyineer. 

 May. and Ind. Rev., 27 (1904), -Vu. 3, pp. 397-408). — A general discussion of the his- 

 tory, advantages, and disadvantages of different methods. 



The cold-storage building and experiments, J. B. Reynolds {Ontario Ayr. 

 Col. and Expt. Farm Rpt. 1903, pp. 14, 15). — Brief notes are given on the success in 



32846— No. 11—04 S 



