188 EXPERIMENT STATION RECORD. [Vol.38 



Number and cost of irrigations at certain pumping plants in NehrasJca in 1914. 



Surface water supply of western Gulf of Mexico basins, 1916 (f7. S. Oeol. 

 Survey, Water-Snpply Paper 43S (1917), pp. 106+XXVI, pis. 2).— This report 

 presents the results of measurements of flow made on the Colorado, Rio 

 Grande, and other river basins in the western Gulf olf Mexico drainage area, 

 together Avith the usual list of gauging stations and publications. 



Recent advances in the improvement of water supplies, C. E. A. Win slow 

 and Anna M. R. Laudee (Conn. Soc. Civ. Engin., Trans, and Proc., 1915-16, pp. 

 lf-27; abs. in Chem. Abs., 11 (1911), No. 5, p. 507).— The efficiency of each of 

 the four principal methods by which surface water may be made safe for 

 drinking, namely, storage, slow sand filtration, mechanical filtration, and disin- 

 fection, are discussed, and typical examples noted with data on cost of 

 operation. 



The domestic water supply on the farm, H. E. Mtjrdock (Montana Sta. Giro. 

 66 (1917), pp. 83-103, figs. 12). — This circular deals with the sanitary aspects 

 of farm water supplies including wells, springs, and cisterns, and describes 

 simple farm water supply systems which are adapted to Montana conditions. 

 A brief section on farm sewage disposal is included. 



Detection of typhoid and paratyphoid bacilli in feces and water, F. 

 DiENERT and G. Mathieu (Compt. Rend. Acad. Sci. [Paris], 164 (1917), No. 2, 

 pp. 124-126; abs. in Jour. Soc. Chem. Indus., 36 (1917), No. 4, p. 232). — Experi- 

 ments are reported in which it was found that coli bacilli developed very 

 slowly during a period of 24 hours in a peptone solution containing variable 

 quantities of malachite green and generally did not grow at all with con- 

 centrations of 1 : 8,000. The typhoid bacilli grew more rapidly in solutions 

 containing from 1 : 5,000 to 1 : 2,000 concentrations of malachite green. Para- 

 typhosus B grew more rapidly than paratyphosus A, and a solution containing a 

 1 : 2,600 concentration of malachite green was totally discolored by the growth of 

 paratyphosus B in 24 hours. The use of malachite green in detecting and dis- 

 tinguishing pathogenic intestinal organisms in water and sewage is considered 

 feasible, although all commercial malachite green is not suitable for this 

 purposa 



The presence of paratyphoid organisms was easily demonstrated in Seine 

 River watei by this method. 



The use of aromatic chloramin compounds for the sterilization of water 

 for drinking pui-poses, R. L. M. Wallis (Indian Jour. Med. Research, 4 (1917), 

 No. 4> PP- 800-817). — Experiments on the use of chloramin T (para-toluene- 



