BURAL ENGINEERING. 291 



and shaft couplings, stuffing boxes, bearings, journals, bangers, pistons and pis- 

 ton rods, connecting rods, pulleys, belting, gearing, and valves. 



Methods for calculating the accomplishment of the motor plow, O. Kas- 

 uoRF (Rev. Min. Indus. Uruguay, 1 (lOlS), No. 6, pp. 105-111). — The author 

 describes and illustrates the use of formulas for calculating the accomplishment 

 of traction plows per unit of time. Tables of test data show the relation be- 

 tween the draw bar pull and the weight of the tractor and the relation between 

 the effective motor horsepower and effective draw bar horsepower. The author 

 considers the resistance of the soils per unit area to be of prime importance in 

 bis computations. 



Sawing ice by electricity (Elect. World, 63 (1914), No. 8, p. 427, figs. 2).— 

 The use of electrically driven ice saws is briefly described and illustrated. 



The plant consists of two sets of 36-in. saws installed in an artificial chan- 

 nel 20 ft. wide, each set being belt-driven by an induction motor. The ice is 

 floated in 12 by 18 ft. cakes to the artificial channel where it is cut into 20 by 

 28 in. blocks. This method Is claimed to effect a great saving in time and labor. 



Farm structures, K. J. T. Ekblaw (New York, 1914, pp. VIII+S4T, figs. 

 159). — This book, written for both the teacher and the progressive farmer, is 

 intended to impart a working knowledge of the construction of practical and 

 economical farm structures. A description of building materials is followed by 

 a discussion of farm building location and the basic methods employed in simple 

 building construction, including designing and estimating. The application of 

 the methods is illustrated by typical plans of various farm buildings and struc- 

 tures. Descriptions of the more essential requirements in the way of equip- 

 ment and farm life conveniences, including heating, lighting, and ventilation of 

 buildings, and water supply, plumbing, and sewage disposal are appended. 



Modern farm buildings, A. Hopkins {New York, 1913, pp. 206, pis. 4T, figs. 

 77). — This work suggests approved designs for the cow barn, dairy, horse 

 barn, hay barn, sheepcote, piggery, manure pit, chicken house, root cellar, ice 

 bouse, and other buildings of the farm group, based on practical, sanitary, ar- 

 tistic, and financial considerations. 



Farm buildings, C. J. Whillas {Jour. Dept. Agr. So. Aust., 11 (1914), No. 6, 

 pp. 654-659, figs. 6). — Plans are given of farm buildings, including the stable, 

 barn, and machine shed, with a discussion. 



The fool-proof poultry house, T. E. Quisenbebey and li. Seable {Missouri 

 Poultry Sta. Bui. 4 {1914), pp. 61, figs. 44).— This bulletin illustrates and 

 describes a number of poultry houses which " are the result of several years of 

 very careful testing and experimenting with practically all of the styles of 

 poultry houses found In the country to-day." The types dealt with are recom- 

 mended to farmers and the poultry raisers of Missouri as being peculiarly 

 adapted to the conditions of that State. 



Separation of horses in the stable, M. Ringelmann {Jour. Agr. Prat., n. ser., 

 26 {1913), No. 35, pp. 213. 214, figs. 2).— This article describes and illustrates 

 devices for easily and safely separating horses in stalls. 



Farm conveniences, W. H. Day {Ann. RiA. Ontario Agr. and Expt. Union, 

 34 {1912), pp. 81S9). — Farm water systems, farm sewage disposal, farm power, 

 and the theory of the hydraulic ram are briefly discussed. 



Estimating the cost of modern improvements {Bom. Engvn., 66 {1914), 

 No. 9, p. 268). — A table of approximate figures is given showing the cost of 

 water supply, plumbing, sewage disposal, hot air or hot water heating, gas and 

 electric lighting, laundry and dairy equipment, gasoline storage, vacuum, cleaner, 

 and refrigerating plant for country houses in proportion to the cost of the 

 house. The houses used range from a 5-room cottage costing $2,000 to a 



