90 EXPERIMENT STATION RECORD. 



machinery, reviewing the most important agricultural implements, discussing 

 the use and advantages of electricity in the operation of plows and thrashing 

 machines, elevators, unloading apparatus, and drying plants, discussing electro- 

 culture and rural electric roads for farm traffic, and calculating the entire 

 amount of electrical energy needed on a 2,000-aci'e farm. The economics of 

 central agricultural electric plants and the prospective demand for electrical 

 agricultural machinery are also discussed. 



A grouped electrical unit, H. d'Anchald (Jour. Agr. Prat., n. ser., 23 

 {1912), No. 4, p. 119, fig. 1). — An electrical unit for supplying electric light on 

 a farm is described consisting of a low-speed gas-motor, dynamo, rheostat, and 

 storage battery. 



Gas lighting' for the farm, F. B. Carpenter {Minn. Farm Rev., 17 {1912), 

 No. If, pp. 74-76, figs. 3). — The author deals briefly with small gas generating 

 systems for farms, describing the gasoline gas, acetylene gas, and blau-gas 

 systems. He points out the advantages relative to safety, durability, and 

 efficiency of these gas systems over the ordinary oil, gasoline, and kerosene 

 methods of lighting and cooking, and discusses initial cost and cost of operation. 



Farm and barn conveniences {Farmer, 31 {1912), No. 16, pp. 593-595, 597, 

 figs. 5). — Brief descriptions are given of some of the modern devices for lighten- 

 ing labor and saving time on the farm, among which are the farm power house, 

 hydraulic ram, hay tools in the barn, barn door hangers, dairy room, milking 

 machines, litter carriers, barn lighting and ventilating, gates and fences, and 

 improved water supply. 



Farm implements, P. McConnell {Jour. New Zeal. Dept. Agr., Jf {1912), 

 No. 2, pp. 89-93, fig. 1). — This article deals with the use, care, and development 

 of farm machinery in general, and shows the need of a knowledge of applied 

 mechanics among farmers. 



New agricultural machinery, especially for motor cultivation, Martinn 

 {ZtscJir. Lanclw. Kammer Sehlesien, 15 {1911), Nos. 39, pp. 1222-1225, fig. 1; 

 40, pp. 1262-1269, figs. 3; 1,1, pp. 1291-1298, figs. 7; 1,2, pp. 132',-1328, figs. 5; 

 1,3, pp. 1355-1357, figs. 5; U, pp. 1387-1392, figs. 8).— A discussion is given of 

 the operation, initial cost, and cost of operation of steam and internal combus- 

 tion motor plows. A number of improved agricultural implements are described 

 and their costs discussed, among which are improved hay forks, potato diggers, 

 turnip headers, manui'e • spreaders, milking machines, straw stackex'S, subsoil 

 plows, and side delivery hay rakes. 



The engine gang {Canad. Threslierman and Farmer, 17 {1912). No. .',, pp. 

 10, 11, 11,, 16, 18, 20, figs. 39).— This is a brief review of the development of the 

 ordinary plow through the ages, and deals esi^ecially with the development of 

 the engine gang plow during the past few years, discussing the improvements 

 in construction and operation of several special tyiies. 



Diagram of ditching plow, with, details for construction and approximate 

 cost, T. B. Wilson {N. Y. Dept. Agr. Circ. 1,5, 1911, pp. 3, figs. 3).— A list of 

 materials, dimensions, approximate cost, etc., of a ditching plow is given, accom- 

 panied by a lettered diagram. 



Two machines in one {Farm Machinery, 1912, No. 1070, p. 16, fig. 1). — ^A 

 combination of hay tedder and side delivery hay rake is described. 



Motor-driven milking machines, F. D. Burr {Elect. Wo7-ld, 59 {1912), No. 

 16, pp. 855-857, figs. 2). — A system of motor-driven milking machines is de- 

 scribed, consisting of a motor-driven rotary vacuum pump to the suction end 

 of which is connected a pipe line which extends through the cow barns and 

 communicates with the milking machines. 



Horses and stock currying' machines (Wiener Landw. Ztg., 62 (1912). No. 

 20, p. 21,0, figs. 5). — Machines for currying horses and cattle are described, and 



