288 EXPERIMENT STATTON RECORD. [Vol. 38 



Tuberculosis of poultry in Ontario, D. H. Jones {Ontario Dept. Agr. Bui. 

 255 {1911), pp. 8, figs. 6).— This is a general discussion of the subject relative 

 to cause, nature, symptoms, and control and eradication of the disease. 



RURAL ENGINEERING. 



Seepage and return waters, L. G. Cakpenter {Colorado Sta. Bui. 180 {1911), 

 pis. 1, pp. S-70, pis. 2; 2, pp. 3-45; 3, pp. 3-146). — This bulletin, issued in 1916, 

 consists of three parts, of which part 2 was published In separate form in 1911 

 (E. S. R., 28, p. 83). 



Part 3 gives data of measurements and observations relative to seepage and 

 return waters from irrigation for the Big Thompson River, Little Thompson 

 Creek, St. Vrain Creek, Left Hand Creek, Boulder Creek, South Boulder Creek, 

 Dry Creek, Clear Creek, Bear Creek, South Platte River, Arkansas River, the 

 Rio Grande, Conejos River, and Uncompahgre River. 



Part 1 summarizes the deductions from the observations in parts 2 and 3, 

 and discusses the phenomena of seepage and the laws of flow of underground 

 water as they apply to such conditions. 



Keport of Water Rights Branch of the Department of Lands for the year 

 ended December 31, 1916, W. Young {Rpt. Water Rights Branch Dept. Lands, 

 Brit. Columbia, 1916, pp. 48, figs. 5). — This report is of an administrative 

 nature and contains data on irrigation, precipitation, and water conservation 

 in the Province of British Columbia for the year ended December 81, 1916. 



Calculations for design of irrigation structures, C. W. Helmick {Transit 

 [Univ. Iowa, 1917], June; abs. in Engin. and Contract., 48 {1917), No. 6, pp. 123, 

 124, figs. 3). — Formulas of flow for use in calculating discharge through high 

 gates of irrigation canals are given. 



Farm drainage methods, W. W. Weir {California Sta. Circ. 174 {1917), pp. 

 31, figs. 21). — This circular was prepared under a cooperative agreement with 

 the Office of Public Roads and Rural Engineering, U. S. Department of Agri- 

 culture. It is intended for use only in sections of California which are free 

 from alkali and is not considered applicable to irrigated land. 



" The purposes of this circular are to call attention to the need for drainage 

 on many of the California farms which are located in regions where the an- 

 nual rainfall is sufficient for agricultural purposes; to outline the advantages 

 to be derived from drainage ; to recommend the use of tile and the systematic 

 construction of open drains ; to offer suggestions regarding the spacing, depth, 

 and size of drains, as well as methods and cost of installing them ; and to urge 

 better cooperation between the owners of adjoining farms in the disposal of 

 storm water and surface run-off. " 



Drainage, B. H. Landels {Nova Scotia Dept. Agr. Bui. 7 {1915), pp. 34. figs. 

 IS). — This is a brief discussion of the principles of land drainage and the con- 

 struction of land drainage systems with reference to their application to Nova 

 Scotia conditions. 



The disinfection of drinking water, H. D. Dakin and E. K. Dunham {Brit. 

 Med. Jour., No. 2943 {1917), pp. 682-684; abs. in Jour. Soc. Chem. Indus., 36 

 {1917), No. 11, pp. 610, 611). — Experiments with parasulphondichloraminobenzoio 

 acid as a means for the effective sterilization of small drinking-water supplies, 

 especially for field use, are reported. It was found to be more suitable than 

 chloramin-T or toluensulphondichloramin. 



A concentration of 1 : 300,000 was foinid sufficient to sterilize any ordinary 

 heavily contaminated water in about 30 minutes. Such a concentration could 

 be relied upon to remove coli, typhoid, or cholera organisms. Special experi- 

 ments showed that the substance in tablet form was effective when acting on 



