790 EXPEEIMEISTT STATION EECOED. 



and noting the cominercial and social advancement of the community. Tlie 

 cost of these roads is about $16,000 per mile. 



An act creating a state highway department and providing aid in con- 

 struction and maintenance of highways {Ohio Highivay Dept. Bui. I4, 1911, 

 pp. 19). 



[Reducing the cost of farm power], D. C. Shafer (Tribune Farmer [N. Y.], 

 11 (1912), No. 561, pp. 1, 2, 21, flff^. 4). — This article enumerates as the 3 

 reliable sources of farm power internal combustion engines, electricity, and 

 water ]X)wer, and discusses their use in connection with the heavy worli ordi- 

 narily performed by men and horses. The fallacy of installing low voltage 

 electric power systems is pointed out and methods of harnessing and trans- 

 mitting small water jwwer are outlined. 



Electricity on the farm, P. A. Bates (Nat. Land and Irrig. Jour., 6 (1912), 

 No. 2, pp. 6-8, figs. 9). — This article deals M'ith the use of electricity for operat- 

 ing cream separators, churns, milking machines, and dairy refrigerators in 

 small farm dairies and describes installations in present use. 



The storage battery in isolated lighting plants, T. Milton (Gas Engine, 

 IJf (1912), No. 7, pp. 353-356). — Investigations of the storage battery when used 

 in connection with isolated electric systems indicate that by the use of storage 

 batteries, electric light and power may be had for 24 hours by operating the gas 

 engine and dynamo a much shorter time. 



The power windmill and electric lights on the farm, F. Forrest ( Wis. 

 Fanner, ^1 (1912), No. 30, p. 709, fig. 1). — A description of a farm power plant 

 driven by a windmill which operates several machines by belt and shaft drive 

 and also an electric generator for electric light, the entire cost of the plant 

 being about $250. 



[Running and maintenance of the internal combustion engine] (Gas 

 Engine, H (1912), No. 9, pp. JiS2-.'iS5). — Notes are given on the starting, run- 

 ning, and maintenance of internal combustion engines with directions for main- 

 taining the following conditions on which the good working of the engines 

 depend: Suitability and steady supply of fuel, correct fuel mixture, sufficient 

 compression, correct valve and ignition timing, efficient governing, good water 

 circulation in the jackets, good but not excessive lubrication, and general 

 cleanliness. 



Selection and care of gas traction engines and equipment, F. H. Grossman 

 (Canad. Thrcsherman and Farmer, 17 (1912), No. 6, pp. 30, 32).— The author 

 recommends for private work a 15 to 30 horsepower, single cylinder, throttle 

 governed, water-cooled, gas or kerosene engine, and for a general public plow- 

 ing business a 30 to 60 horsepower, oil-cooled, gas or kerosene engine. He 

 gives brief directions for the care and use of the engine and its equipment, and 

 suggests a list of tools and other handy equipment. 



[The gas engine governor], C. W. Hull (Gas Engine, 14 (1912), No. 9, pp. 

 479, J/SO). — Directions are given for the care of the governing mechanism on 

 internal combustion engines, more especially on the hit-and-miss governed type. 

 It is stated that the speed should be controlled with minimum variation from 

 no load to full load and fiom full to no load in order to prevent injury to the 

 engine due to sudden si^eed changes, to obtain the best results from the driven 

 machinery, to give fuel economy, and to save the time wasted by hand 

 regulation. - 



Some lubrication problems, A. E. Potter (Gas Engine, 14 (1912), No. 7, pp. 

 S4S-348). — This is a paper read before the National Gas Engine Association 

 at Milwaukee, in which the author discusses gas engine lubrication. He states 

 that the simplest and easiest gas engine to lubricate efficiently is the hori- 

 zontal 4-cyc'le engine, and maintains that every vertical gas engine piston 



