590 EXPERIMENT STATION EECOED. 



The construction of cow-byres, W. S. H. Cleghorne (Agr. Jour. Union So. 

 Africa, 3 (1912), No. 3, pp. 372-S82, figs. 7).— The principles of the external 

 and internal design and construction of single and double cow sheds are pre- 

 sented. The objects emphasized as to be kept in view are cleanliness, ventila- 

 tion, lighting, comfort and health of cows, and economy of labor. 



An improved roof for the cow house, R. Henderson (Trans. Highland and 

 Agr. Soc. Scot., 5. ser., 24 (1912), pp 17-86, figs. 9). — The author points out 

 the unsanitary features of the wooden or tile roof supported on a framework 

 of wooden struts and rafters, and recommends and gives the details of con- 

 struction of a nearly flat reenforced concrete roof supported by small steel 

 girders. This construction presents a minimum resistance to air circulation 

 and a minimum surface for the settling of dust and other unsanitary matter, 

 and makes good ventilation and lighting possible. 



Ventilating- the cow barn, J. H. Grisdale (Canad. Thresherman and Farmer, 

 n (1912), Nos. 5, pp. 55-58, figs. 7; 6, pp. 53-57, figs. 8).— Some notes and 

 observations are given on stable ventilation in general, with si^ecific informa- 

 Lion as to the ventilation requirements of a given dairy stable and illustrated 

 instructions for the installation of a suitable system. 



A modem granary, J. E. Bridgman (Farm and Ranch, 31 (1912), No. 23, p. 

 11, fig. 1). — Plans are given showing the construction of a granary and the 

 location of equipment, the whole costing $1,350. 



Cement stucco silo, J. W. Hart (Sotith. Agr., 42 (1912), No. 13, pp. 10, 11).— 

 A bill of materials and the details of construction of a 12 ft. by 28 ft. cement 

 stucco silo are given. This type of silo presents the qualities of strength, 

 durability, cheapness, and neat appearance. 



Residential sewage disposal plants, W. H. Booker (Bui. N. C. Bd. Health, 

 27 (1912), No. 4, pp. 146-156, figs. 7). — The author deals with the design, con- 

 struction, and operation of small sewage disposal plants for isolated resi- 

 dences having not over 10 or 12 occupants, presenting the principles of puri- 

 fication by bacterial action in both the settling tank and filter bed or absorp- 

 tion area, and discussing surface sewage irrigation. He bases his design on 

 an avei'age daily flow of sewage per person of about 35 gal., and a size of 

 septic tank to contain not over from 18 to 36 hours sewage flow for proper 

 bacterial action. 



RTTRAL ECONOMICS. 



Monographs on agricultural cooperation in various countries (Intemat. 

 Inst. Agr. [Rome], Bur. Econ. and Soc. Intel., Monographs Agr. Co-oper., 1 

 (1911), pp. XVI +451). — This is a revised edition of a publication previously 

 noted (E. S. R., 24, p. 795). It presents notes and statistics on agricultural 

 cooperation in various countries, including the following subjects : Historical 

 and Statistical Sketch of the Present State of Agricultural Cooperation in 

 Germany, Cooperative Land Credit Societies in Germany, and Present Condi- 

 tions of Noncooperative Agricultural Associations ; a General Sketch of Agri- 

 cultural Organization in Belgium, Technical Work of the Professional Unions, 

 Commercial Action of Professional Unions, Credit, and Cooperative Insurance; 

 Cooperative Dairies, Cooperative Bacon Factories, Societies for Purchase and 

 Sale, and Live Stock Improvement in Denmark; Historical Sketch of Agri- 

 cultural Cooperation in British India, and The Cooperative Movement in 

 1908-9 ; Present State of Agricultural Unions in France, and Statistics Relative 

 to Agricultural and Credit Cooperation ; Noncooperative Agricultural Societies 

 in the United Kingdom, Agricultural Cooperation in Great Britain and Ire- 

 land, Relations between the Agricultural Cooperative Movements in England, 

 Scotland, and Ireland; Agricultural Cooperation and Associations in Norway, 

 Holland, Russia, and Sweden. 



