590 EXPERIMENT STATION RECORD. [Vol.37 



Modern road construction, A. T. Bykne {Chicago: Amer. Tech. Soc, 1911, 

 pp. [V 1 1 1] -\- 181, pi. 1, figs. 113). — This is a treatise on the engineering prob- 

 lems of road building, with a compilation of highway specifications. It is the 

 purpose to cover the field of road building for both rural and urban conditions. 

 The following chapters are included : Conntry roads and boulevards — resistance 

 to movement of vehicles, location of roads, preliminary road construction 

 methods, culverts, earthwork, and maintenance and improvement of roads; 

 city streets and highways — foundations, stone-block pavements, brick pave- 

 ments, wood-block pavements, asphalt pavements, miscellaneous pavements, 

 miscellaneous street work, curbstones and gutters, street cleaning, and select- 

 ing the pavement. 



Good roads yearbook, 1917 {Oood Roads Tear Book, Amer. Highicay Assoc, 

 1917, pp. VII +556, figs. 36). — This is the sixth annual edition of this book 

 (E. S. R., 35, p. 583). It gives information regarding road improvements under 

 Federal, State, Territorial, and local control and on the construction and main- 

 tenance of rural roads and miscellaneous information and tables. 



Report of the State highway commission of Minnesota, 1915—16 {Rpt. 

 Highuay Com. Minn., 1915-16, pp. 40, pJs. 3, figs. 16). — This is a report on the 

 work and expenditures on road and bridge design, construction, and mainte- 

 nance in Minnesota during the years 1915-16, including data on reinforced con- 

 crete bridge and culvert tests. 



Wisconsin highway commission, second biennial report (Wis. Highway 

 Com. Bien. Rpt., 2 (1913-H), pp. IX+260, pis. 5, figs. 85).— This is a statement 

 of work and expenditures on highway construction, maintenance, and repair 

 in Wisconsin for the two calendar years ended December 31. 1914. together 

 with the cost of construction for the year 1912. 



The highway law [of New York] (Albany, N. Y.: State, 1916, pp. SU)-— 

 The text of the law is given. 



Automobile registrations, licenses, and revenues in the United States, 

 1916 (U. S. Dcpt. Agr., Office Sec. Circ. IS (1911), pp. 15, fig. i).— This cir- 

 cular was prepared in the Office of Public Roads and Rural Engineering. 



" In 1916 a total of 3,512,996 motor cars — including commercial vehicles — and 

 250,820 motorcycles, were registered in the several States on account of 

 which the States collected in registration and license fees, including those of 

 chauffeurs and operators, a total gross revenue of $25,865,369.75. As com- 

 pared with 1915, this was an increase of 1,067,332 cars, or 43 per cent in 

 number, and $7,619,059, or 42 per cent in revenue. This corresponds very 

 clo.sely to the annual percentage increase of the three preceding years, which 

 was about 40 per cent for motor cars and 50 per cent for revenues." 



Data are also reported showing motor vehicle registrations and license fees 

 in force January 1, 1917, and administrative provisions in force January 1, 

 1917, affecting motor vehicle registrations, licenses, and revenues. 



A treatise on concrete, plain and reinforced, F. W. Taylob and S. E. Thomp- 

 son (Ncto York: John Wiley d Sons, Inc.; London: Chapman d Hall, Ltd., 

 1916, 3. ed., rev. and cnl, pp. XX+885, pi. 1, figs. 268).— This is the third re- 

 vised and enlarged edition of this book (E. S. R.. 28, p. 186). The most im- 

 portant changes are in the portions treating of reinforced concrete. Promi- 

 nent among the additions in the first part of the book are specifications for 

 reinforced concrete and new cement specifications. 



Extracting alcohol from garbage would conserve vast quantities of grain 

 and potatoes (Engin. News-Rec, 18 (1911), No. 11, pp. 534, 535, fig. 1). — Experi- 

 ments at the Columbus, Ohio, garbage reduction works showed " that 1 ton 

 of Columbus green garbage will yield 4.8 gal. of 95 per cent alcohol of satis- 

 factory quality. Estimates indicate that a .$36,000 plant would prodnre from 



