720 EXPERIMENT STATION EECOED, 



JUJl, Xo. 1',, nih 1-.Hi; rev. in Engiii. Xru-s, iU> i lUll). A'o. .0, /;/). .2.',()-.230 ; abs. in 

 Wassrr i(. Abicasucr, If {1911), Xo. 9, pp. 377, 37H). — This is a summary of 

 information bearing upon the role plaj'ed by the aquatic flora and fauna in 

 maintaining tlie purity of streams and lakes and the effect of domestic sewage 

 and industrial wastes upon sncli flora and fauna. A list of the scientific works 

 of Dr. Marssou is appended to the article. 



Hypochlorite treatment of public water supplies, G. A. Johnson [Jour. 

 Amer. Pub. Health Assoc, 1 (1911), No. 8, pp. 502-57. 'i). — This article discusses 

 briefly the adaptability and limitations of this process and the extent to which 

 it is actually employed in this country. 



Industrial sterilization of water with, ultraviolet light, M. von Reckling- 

 hausen (EUktrochem. Ztschr., 17 {1910). Nos. 8, pp. :iU-21G, figs. 3; 9, pp. 

 2JiJt-2.>i8, figs. 2). — The progress in the development of this method of water 

 sterilization is briefly reviewed. 



Sewage pollution of interstate and international waters with special ref- 

 erence to the spread of typhoid fever. — I, Lake Erie and the Niagara River, 

 A. J. ]\IcLaughlin {Pub. Health and Mar. Hasp, iierv. U. S., Hug. Lab. Bill. 77, 

 pp. 169, charts 55, maps 16). — This bulletin discusses the relation of sewage pol- 

 luted with water supplies to typhoid fever death rate with special reference to 

 conditions along the New York, Pennsylvania, and Ohio shores of Lake Erie, 

 and reports studies of tliese conditions, indicating a general dangerously con- 

 taminated condition of the lake waters drawn upon for the supply of the lake 

 shore towns and cities and requiring purification works of high efficiency. 



It is shown that this is a matter of great importance from the interstate and 

 international standpoint, and it is maintained that " prevention or control of 

 pollution of interstate and international waters should be a function of the 

 Federal Government. The problem can not be handled by States, as uniformity 

 of law and unanimity of opinion is difficult to obtain and almost too much to 

 expect." 



Modern methods of sewage purification, G. B. Kershaw {London and Phila- 

 delphia, 1911, pp. XIII -r 356, 1)18. 36, figs. 15). — This book is intended as "a 

 guide for the designing and maintenance of sewage purification works," and 

 deals with the following subjects : Conservancy methods, drainage areas, water 

 supply, sewerage systems, rainfall, storm water, variations in flow of sewage, 

 classification and composition of sewages, considerations to be observed in 

 selecting the site for sewage disi)osal worlcs, preliminary processes, disposal of 

 sludge, land treatment of sewage, contact beds, percolating filters, trade wastes, 

 and purification works in actual operation. Introductory chapters review the 

 development of sewage purification during the last half century. One of the 

 longest and most important chapters of this book deals rather fully with land 

 treatment of sewage, the merits and limitations of this method being fully pre- 

 sented. The author holds that, with suitable land, moderate volume of sewage 

 to be handled, and intelligent management, land treatment can not be excelled 

 as a means of sewage purification. 



Residential sewage disposal plants, R. W. Pratt {Mo. Bui. Ohio Bd. Health, 

 1 {1911). No. 7, pp. 228-235, figs. J,; abst. in Engin. and Contract., 36 {1911), 

 No. 16, pp. Ji07, Ji08, figs. //). — This article briefly discusses the general principles 

 involved in the problem of disposing of sewage from individual houses, describ- 

 ing some of the simpler methods of sewage disposal. 



SOILS— FERTILIZERS. 



Preliminary report on the Klamath marsh experiment farm, C. S. Scofield 

 and L. J. Briggs {U. 8. Dept. Agr., Bur. Plant Indus. Circ. 86, pp. 10, fig. 1).— 

 This circular reports the results of preliminary experiments to determine the 



