1917] RURAL ENGINEERING. 891 



a main trunk line serving cities. The cost of interruptions to the service is 

 likely to more than offset the possible profit from such business." 



It is further concluded that " the farmer should pay for the rural service lines 

 These should be maintained and owned by the power company under its own 

 franchise. The transformers and protective apparatus should preferably be 

 furnished by the power company. The rate charged should be sufficient to 

 cover the additional cost of giving such service." 



A gasoline tiller, F. C. Perkins {Gas Engine, 19 {1911), No. 2, pp. 61-65. 

 figs. 5). — This article describes and illustrates a new attachment for moldboard 

 plows, consisting of a toothed rotor in peri>eudicular juxtaposition with the 

 moldboard of the plow. " This rotor is operated by a gasoline motor. The 

 engine turns the rotors at high speed, tJie teeth of the rotor engaging the soil 

 as it comes from the moldboard, and pulverizes or disintegrates the soil per- 

 fectly, throwing it out at the rear, thoroughly mixed Avith the sod, weeds, grass, 

 manure, and any otlier form of surface growth or fertilizer which happens to 

 be present, all forming a perfect seed and root bed." 



Farm building's and building construction in South Africa, W. S. H. Cleg- 

 HOBNE {New York and London: Longmans, Green d Co., 1916, pp. XXIII-\-325, 

 pis. 5, figs. 218). — This book, prepared for farmers, students, teachers, and agri- 

 cultural engineers, with special reference to conditions in South Africa, deals 

 with the general arrangement and design of farm buildings, building materials, 

 details of construction, stables, sanitary dairy sheds, bull boxes and exercise 

 yards, small butter making and cheese making dairies, piggeries, silos, a reser- 

 voir, cattle and sheep dipping tanks, sheep shearing sheds and yards, a small 

 cottage, and a cool storage room, the protection of buildings from lightning 

 and white ants, etc. An api^endix is also included containing .sections on the 

 calculation of horizontal reinforcing bars (hoops) in the wall of the silo, a 

 design of a reinforced concrete tank or reservoir, and the calculation of gradua- 

 tions showing the volume of liquid in a cattle dipping tank at various depths. 



The reconstruction of farm buildings in devastated areas, R. de Saint- 

 Maurice {Vie Agr. et Rurale, 7 {1911), No. 1, pp. 9-11, figs. 8).— Methods of 

 reconstruction of farm buildings in localities in France devastated by the war 

 are described. 



Mechanics of the household, E. S. Keene {[Agricultural College, N. Dak.: 

 Author, 1911], pp. 234, figs. 211). — This publication, prepared as a contribution 

 to physics, contains the following chapters : The steam-heating plant, the hot- 

 water heating plant, the hot-air furnace, temperature regulation, management 

 of the heating plant, plumbing, water supply, sewage disposal, coal, atmospheric 

 humidity, ventilation, lighting and heating with gasoline, acetylene gas ma- 

 chines, and gaseous and liquid fuels. 



Domestic water supply {Colo. Agr. Col. Ext. Serv. Bui., 1. ser., No. 108 

 {1916), pp. 11, figs. 5). — This is a popular bulletin on the subject, in which five 

 steps in the process of providing running water in the farmhouse are described. 

 These vary from the cold water supply over a sink in the kitchen to a bathroom 

 and hot and cold water supply outfit. The use of the windmill for pumping is 

 also described. A feature at variance with accepted sanitary practice which 

 is recommended is the so-called gravel waste pit, situated close to the house 

 and well, and used for the disposal of waste water. It is stated that " the 

 waste pit consists of a hole, say 3 ft. across and 5 to 6 ft. deep, which is filled 

 with gravel. This can be near the house in nearly every case, because only wash 

 water and similar waste waters will be run into this pit." 



House equipment for running water, J. L. Mowry {Univ. Minn., Col. Agr., 

 Ext. Bui. 61 {1916), pp. 8. figs. i2).— This bulletin briefly describes gravity, 



