598 EXPERIMENT STATION RECORD. [Vol.37 



The chemistry of farm practice, T. E. Keitt (Neio York: John VTUey <f Sons, 

 Inc., 1917, pp. XII +253, figs. 81). — This text, which has been prepared for high 

 schools in farming communities, vocational and industrial schools, and short- 

 coui-se students in agricultural colleges, deals with the fundamental principles 

 of chemistry and their application to the problems which arise in the life 

 on a farm, including the study of soils, fertilizers, and manures, feeds and the 

 calculation of rations, animal nutrition, milk and its products, sanitary water, 

 boiler water, insecticides, fungicides and disinfectants, paints and whitewashes, 

 materials producing heat and light, and concrete. 



Nature study or stories in agriculture (Ontario Dept. Agr. Bui. 248 {1916), 

 pp. 70, figs. 46). — This is a revised edition of the bulletin previously noted 

 (E. S. R., 14, p. 822). 



The culture of the mulberry silkworm, T. A. Keleher {Washington: 

 Author, 1917, pp. IS, figs. 5).— This brief manual, adapted for practical use or 

 for study in the classroom, gives instruction regarding the life history and 

 rearing of silkworms as adapted to commercial puprsuits. 



Vocational mathematics for girls, W. H. Doolev {Boston, New York, and 

 Chicago: I). C. Heath d Co., 1917, pp. VI +.369, figs. 7.9).— This text is offered 

 as an introduction to the regular secondary school course in matheniatics. It 

 consists of six parts dealing respectively with a review of arithmetic ; problems 

 in home making, including the distribution of income, food, construction of a 

 house, cost of furnishing a house, and thrift and investment ; problems in dress- 

 making and millinery; office and store problems; arithmetic for nurses; and 

 problems on the farm. An exposition of the metric system, graphs, formulas, 

 and useful mechanical information are appended. 



Live-stock classifications at county fairs, S. H. Ray {U. S. Dcpt. .Agr.. 

 Farmers' Bui. 822 {1917), pp. 12, fig. 1). — This discu.sses, in a general way and 

 with reference to increasing the educational value of the county live-stock ex- 

 hibit, cooperation with live-stock organizations; uniformity of cla.ssification ; 

 special features, such as futurity and judging contests ; selection of superin- 

 tendents, judges, etc.; arrangement of exliibits; announcement of judges, prize 

 winners, etc. ; exhibition of prize winners ; rules governing an exhibition ; pre- 

 miums; and a suggested scheme of classifications. 



Illustrated lecture on public-road improvement {U. S. Dept. Agr., States 

 IxcHat. Scrv. Sgllahus 29 {1917), pp. 12). — This syllabus has been prepared in 

 the Office of Public Roads and Rural Engineering. It considers only the gen- 

 eral features of public-road improvement, including the three distinct phases 

 of public sentiment, finance, and engineering entering into most road problems. 

 Points to be studied in the location and design of roads to balance the conveni- 

 ence of travelers against the question of economy, types of surface, and main- 

 tenance are discussed. A list of 56 lantern slides to illustrate the syllabus is 

 appended. 



[School home gardening] {U. S. Dept. Int.. Bur. Ed.. School Homc-Gard. 

 Circs., 1917, No. 12, pp. 13; 1916, No. IS, pp. 5; 1917, Nos. 14. pp. 4; 15, pp. 4; 

 16, pp. 3). — The following subjects are dealt with in these circulars: School 

 home garden results of 1916, mainly in those cities that are cooperating with 

 the U. S. Bureau of Education in working out the plan for school-directed home 

 gardening; garden projects in seed planting; flower growing for school chil- 

 dren in elementary grades; the part played by the root in the production of a 

 crop; and homo gardening for town children. 



The effect of home-demonstration work on the community and the county 

 in the South. 15. Knapp and Mary E. Creswet.f. (T. S. Dcpt. Agr. Yearbook 

 1916, pp. 251-266, pis. S). — The authors describe the home-demonstration work 

 for women and girls in eight counties of the South and some of the benefits 



