YIII CONTENTS. 19-0] 



BUKAL KNGINKEBING. 



Page. 



Agricultural associations for irrisation of soil, Caselli 587 



Pre^-'ast concrete slabs for small irrigation structures, Olmsted 587 



Factors affecting the use of water in irrigation, Moi'itz 587 



Use of water from Kings River, Calif., 1918, Barnes 588 



Comparative study of potable waters of the Canton of Ticino, A'erda 588 



Inspection of drain tile for the U. S. Reclamation Service, Drager 5S9 



Fi'ai'm drainage machinery, Merrisou 589 



Earthwork and its cost, Gillette 589 



Measuring ui)ward pressure under a nasonry dam, I^ane and Chandler — 589 



Concrete consistency measured by the tlow table, Williams 590 



Tests of solid and laminated wood sheet-piles 590 



The phenomena of drying wood, Tiemann 590 



Phenomena of drying wood, Tiemann 591 



Public Roads 591 



Report of the commissioner of highways of Minnesota, Babcock 591 



Tenth report of the State highway commissioner of Vermont, Bates 591 



Power applied to agriculture, compiled by Cleghorne 591 



Valve springs for internal combustion engines, Mathot 591 



Motor fuel from waste molasses 591 



Analysis of fundamental factors affecting tractor design, Zimmerman 592 



Modern farm buildings, Hopkins 592 



Protecting buildings against the white ant, Snyder 592 



Tests to determine the efficiency of coal stoves, Allen and Rowley 592 



RURAL ECONOMICS. 



Animal foodstuffs, Shanahan 593 



The cost of producing wheat in Kansas, crop of 1919, ]Mohler 593 



Farm tenancy and rural credits 593 



Studies of land values in Iowa, Lloyd 593 



Sale and rental value of agricultural land in Sweden, Nanneson 591 



Economics of small farms and holdings in Scotland, Conacher and Scott- 594 



Cooperation in many lands, Smith-Gordon and O'Brien 594 



The cooperative movement in Nebraska. Weseen 594 



A brief list of good publications on the rural conmiunity 595 



Farm life studies and their relation to home economics work, G;ilpin 595 



The Market Reporter 595 



Farmers' Market Bulletin 595 



Economical notes on Brazil 595 



Area and yields of agriculture in Austria for 1918 595 



AGRICULTURAL EDLTCATIOX. 



Vocational education. Baker 595 



Vocational education [in E'lorida], Phillips 595 



Vocational education in Nebraska under the Smith-Hughes Act, Clemmons_ 59!) 



Vocational schools for girls in New Jersey, O'Leary 596 



Vocational education, Cavett 596 



Vocational education in New Mexico 596 



Report of the State supervisor of agricultural instruction, Peterson 597 



Vocational agriculture in Virginia, Hart 597 



Report of public high schools of Alrginia for 1917-18, Duke 597 



Wisconsin laws relating to vocational education 598 



Social surveys of rural school districts, Galpin et al 598 



School house and shops for Arkansas schools of vocational agriculture — 598 



Agriculture: Tentative course of study for schools of Montana, Abbey 598 



Nature study, geogrnphy, and agriculture, Blanton 598 



Reconstruction in the domestic science kitchen, Goodspeed 598 



MISCELLANEOUS. 



The impartiality of research, Bailey 598 



Director's report for 1919, Jordan 598 



Annual Report of Pennsylvania Station, 1916 598 



