292 EXPEEIMENT STATION RECOKD. 



15-room country residence costing $15,000. " Generally, as tbe basic cost of the 

 house is greater, the percentage that expresses the cost of equipment for same 

 becomes less." 



Water supply for farm or cottage (Jour. Soc. Agr. Suisse Romande, 55 

 (1914), No. 2, pp. 29-34, flffs. 3). — An automatic water elevator for use in 

 obtaining rural and residential water supplies is described and illustrated which 

 is claimed to be more efficient and convenient than the hydraulic ram. This 

 machine consists essentially of an impulse cylinder below and a compression cyl- 

 inder above. Besides the impulse cylinder is placed a governor which regulates 

 the entrance and escape of the impulse water. The piston of the compression 

 cylinder is directly connected to that of the impulse cylinder by an iron bar. 

 The disadvantages of this system are said to be its higher cost and the necessity 

 of special construction for each installation. 



Bural water supply, C. A. Ocock (Country Gent., 79 {1914), No. 8, pp. 376- 

 378, figs. 3). — The author briefly describes the gravity, compression, and pneu- 

 matic systems for supplying running water to farm homes and gives hints as to 

 Installation, operation, and cost. 



Disposal of sewage from isolated country houses, mansions, and public 

 institutions, T. W. Stainthorpe (Agr. Jour. Union So. Africa, 7 {1914), No. 1. 

 pp. 60-62). — In a discussion of sanitary conditions in rural South Africa, the 

 author gives a brief description of a small " bacterial " installation for a coun- 

 try house, mansion, or institution with an average population of 15 or 20. 



Prevention of malaria, R. H. von Ezdorf {Pub. Health Rpts. [U. S.], 29 

 {1914), No. 9, pp. 503-508, ;;Zs. 2). — Suggestions on how to screen the home to 

 keep out effectively the malarial mosquito are given, these dealing principally 

 with material, screening of doors, windows, and other openings where mosqui- 

 toes enter, care and repair of screens, and the economic value of screening. 



The best size of mesh for all pui-poses is said to be the 18 mesh, that is, 

 18 strands of wire to the linear inch in either direction. A 16 mesh is said to 

 be quite eflacient and if carefully painted will practically be equal to an 18 

 mesh. " Even copper or bronze wire should be treated with some varnish or 

 paint, as it is likely to oxidize and corrode when exposed to a damp climate, 

 particularly near the seashore. . . . 



To be of proper construction, a doorframe should be made of cypress or other 

 seasoned wood 1 to li in. thick, well braced and painted. The wire should 

 be of 16 or 18 mesh. The lower panel should be covered on the inner side with 

 a one-fourth inch mesh wire guard to protect the screening. ... An easy 

 fitting door, fully one-fourth inch clear all around the edge is best, and to make 

 it mosquito proof it will be necessary only to tack a strip of light canvas 1 in. 

 wide around the top and one side of thexiloor facing on the outer side. . . . 



" The most efliicient method of screening a window is to screen the entire 

 opening. A well-fitting screen frame which is screwed into place so that it can 

 be removed at the end of the season is probably the best. . . . 



'• Other places to be absolutely screened are the fireplaces, openings into 

 chimneys for stove pipes, drain holes, ice-box drips through floors, and the 

 like. ... If the porches are screened, the holes at the bottom for draining off 

 water should also be screened. . . . 



" In repairing torn wire screening, a small piece of wire netting cut to size 

 should be placed over the torn opening and fixed into place by sewing or lacing 

 with a strand of the wire." 



The economic value of screeiiing is illustrated by a typical example and 

 numerous cost data are given. 



Modern practice in heating and ventilation. — XIII. Various devices for 

 forcing circulation in domestic hot water heating plants, A. G. King {Dam. 



