88 EXPERIMENT STATION EECOKD. 



The proposed standardization of farm wagons {Farm Machinery, No. 1239 

 (1915), pp. 18, I'J). — A plan for the standardization of farm ^yagons approved 

 by the National Implement and Vehicle Association is given. The purpose of 

 the effort at standardization and simplification of wagons is to produce an inter- 

 changeable line of wagon parts which will permit the dealer and manufacturer 

 to serve the farmer quicker and better. The standardization is confined to 2- 

 horse wagons for farm, ranch, and mountain use and does not consider 1-horse 

 wagons, farm trucks, or gears for special purposes. ^Vith this in view all gears 

 with skeins larger than 3J in. and with steel axles larger than 2} in. have been 

 counted as belonging to the special teaming gear class. 



Tests of potato planters, potato diggers, and grain driers and preliminary 

 examinations of new implements, G. Fischeb et al. {Arb. Dent. Landw. 

 Gesell., No. 265 {191/f), pp. 113, figs. 05). — A number of tests of different com- 

 mercial makes of potato planting and harvesting machinery and grain driers are 

 reporte<l, together with the results of preliminary examinations of a number of 

 different agricultural implements. 



Methods used in constructing a 108-ft. monolithic concrete silo near 

 Salona, Pennsylvania {Concrete-Cement Age, 6 {1915), Xo. 6, pp. 301, 302, 

 figs. 3). — The details of the construction of this silo are presented. 



Methods and costs in constructing a combined concrete silo and water 

 tank {Concrete-Cement Age, 6 {1913), No. 3, pp. 162-16J,. figs. 7).— The details 

 of this structure are illustrated and de.scrlbed. 



Heating greenhoiises by hot water, G. W. Loebfr {Dom. Engin., 10 {1915), 

 No. 13, pp. 39:>-.',01, figs. J,; 11 {1915), No-o. 2, pp. 31-33, figs. 7; 5, pp. I;?ff-136, 

 figs. 3, 9, pp. 2.'i.',, 2-'i5, figs. 2; 13, pp. 362-366, figs. 3).— This article gives a 

 detailed description, with illustrations, of how to install hot water heating .sys- 

 tems in greenhouses, dealing with the open tank, closed pre.s3ure. and forced 

 circulation systems. 



Safe disposal of human excreta at unsewered homes, L. L. LuirsDEN, C. W. 

 Stiles, and A. W. Fueeman {Pub. Health Serv. V. S., Pub. Health Bui. 68 

 {1915), pp. 28. figs. 13). — In this bulletin, after discussing some of the serious 

 disea.ses affecting the human race with reference to their distribution in human 

 excreta, it is stated " that human excreta, if not prevented from reaching human 

 bodies, constitute the most dangerous of all matter with which we are liable 

 to come into contact in the course of our daily lives." As methods for the dis- 

 posal of human filth, different types of sanitary privies are described and illus- 

 trated, including the well-known L. R. S. type (E. S. R., 2."i, p. 891). 



It is stated in conclusion that " the proper disposal of human excreta can not 

 be accomplished without some labor and ex-pense, but the return in cleanliness, 

 comfort, and health make an intelligent expenditure of labor and money for 

 .such a purpose one of the b'^st possible investments." 



The danger zone on the farm. Sewage disposal {Va. Health Dvl., 7 {1915), 

 No. 6, pp. 2.'fl-262, figs. 8). — This bulletin describes and illustrates different 

 types of sanitary privies, including the pail and pit types and the Kentucky 

 .sanitary privy, and also briefly describes and illustrates a small sewage-disposal 

 system consisting of a septic tank and a subsurface irrigation system. Bills 

 ol material are included. 



Three residential sewage-treatment plants near Cleveland, R. F. Mao- 

 DowELL {Engin. News, 74 {1915), No. 2, pp. 56, 57).— Three small residential 

 sewage-treatment plants of different design are described comprising (1) a two- 

 .story sedimentation tank and glass-covered rapid .sand filters. (2) screens, a two- 

 story sedimentation tank, a dosing tank, and intermittent sand filters, and (3) 

 ft septic tank, dosing tank, and subsurface irrigation system. It is stated that 



