942 EXPERIMENT STATION RECORD. 



TECHNOLOGY. 



The heating po^ver of Wyoming coal and oil, ■with a descrip- 

 tion of the bomb calorimeter, E. E. Slosson and L. 0. Colburn 

 ( University of Wyoming Spec. BuL, Jan., 1895, pp. 32, Jig. 1). — Analyses 

 and tests of the fuel value of 54 samples of Wyoming coal, and tests of 

 fuel value of 2 samples of Texas coal, 1 of fat pine knots, 6 of petroleum, 

 and 2 of asphalt are reported and discussed in some detail. The aver- 

 age results of the tests of Wyoming coals were as follows: Calories 

 per gram 6,282, foot-pounds per pound of coal 8,779,000, pounds of 

 water at 212° F. evaporated by 1 lb. of coal 11.7. In case of the 

 petroleum the calories varied from 10,430 to 10,927, the foot pounds 

 from 14,571,000 to 15,204,000, and the pounds of water evaporated 

 from 19.4 to 22.24. Mahler's calorimetric apparatus is illustrated and 

 described and the principles and methods of calorimetry are explained. 



Analyses of maple sugar, sirups, etc., J. L. Hills and B. O. White (^Vermont 

 Sta. Bpt. 1893, p. 29). — The percentages of sugar in 21 samples are reported. 



EfTect of deep and shallow tapping of maple trees {Gardeu and Forest, 8 {1895), 

 p. 150). — Deep tapping gives a much greater flow than when tapped but an inch deep. 



Report on experiments in ■wine making in 1893, E. Kayser {Bui. Min. Agr. 

 France, 13 {1894), No 8, pp. 874-884). 



A contribution to the study of the utilization of the refuse of vrine making, 

 E. SiLVA {Staz. Sper. Agr. Hal., 28 {1895), No. 1, pp. 5-18). 



AGRICULTURAL ENGINEERING. 



Farm drainage, C. L. Newman {Arkansas Sta. Bid. 32, pp. 33-54, fig. 1). — A popu- 

 lar discussion of this subject under the following heads: Protection from surface 

 washiug (plant cover, hillside ditches, and terraces), and drainage of wet lands 

 (indications of the need of drainage, open ditches, and underdrains or covered 

 ditches), with an appendix describing a homemade terracing instrument. 



The artesian ■wells of southern Wyoming, J. D. Conley ( Wyoming Sta. Bpt. 

 1894, pp. 87-122).— K reprint of Bulletin 20 of the station (E. S. E., 6, p. 848). 



The Harvey water motor, A. A. Johnson {Wyoming Sta. Bpt. 1894, pp. 66-72, 

 figs. 6). — A reprint from Bulletin 18 of the station (E. S. R., 6, p. 346). 



An electric plow, F. Brutschke {Fiihling'a landiv. Ztg., 44 {1895), No. 5, pp. 

 158-165, fig. 1). 



Plo^ws, rollers, fertilizer distributors, and potato planters, Ringelmann (Jo?tr. 

 Agr. Prat., 69 (1895), No. 11, pp. 388-393, figs. 8). — Descriptions of agricultural 

 implements tested. 



Heel scrape and scooter, R. L. Bennett and G. B. Irby {Arkansas Sla. Bui. 

 31, pp. 28-31, fig. 1). — This implement is described and the character of its -work 

 commended. 



Agricultural implements, A. Debains {Les machines agricoles sur le terrain. 

 Paris). — Separate volumes treat of culti\;itors, seeders, and harvesting machines. 



Proceedings of the Virginia Good Roads Convention held in Richmond, Vir- 

 ginia, October 18, 1894 ( U. S. Dept. Agr., Office of Boad Inquiry Bui. 11, pp. 62, 

 fig. 1). — An account of the proceedings, giving text of remarks, addresses, and 

 papers. Addresses were made by G. L. Christian, president of the Richmond 

 Chamber of Commerce, and S. W. Corbin, president of the State Board of Agricul- 



