716 EXPERIMENT STATION RECORD. 



Bacteria of the dairy wells in the vicinity of Washington, D. C, and 

 their possible relation to typhoid fever at Washington, K. F. Kellerman 

 and T. D. Beckwith (Eiiffin. Neics, 57 {1901), No. 6, p. 152, fig. 1). — This is a 

 paper read at the New York meeting of the Society of American Bacteriologists 

 December 29, 190G. The authors conclude as a result of their examination of a 

 few dairies (especially the water supply) in the neighborhood of Washington, 

 that " it would seem highly probable that, under the conditions portrayed, much 

 of the typhoid of the city of Washington may be ascribed either directly or indi- 

 rectly to the unsanitary dairy farms." 



Shall pollution of Michigan streams be permitted? M. O. Leighton {Rpt. 

 Mich. Arad. .^'c/., 8 (1906). pp. 119-121). — Assuming that the streams of Mich- 

 igan must inevitably be polluted, the author attempts to draw a definite line 

 between permissible and unavoidable pollution and unreasonable or gross 

 pollution. 



Prevention of the bacterial contamination of streams and oyster beds, 

 W. r. DiGBY and II. C. H. Shenton (Surveyor, 30 (1906), Nos. 777, P2). 653-655; 

 77S, pp. 6S5-690). — This article deals with progress which has been made in. 

 methods of sewage treatment since the exhaustive report of the Royal Commis- 

 sion on this subject (E. S. R., 16, p. 1032). It is asserted that methods of 

 sewage treatment have now been devised by which " within reasonable limits 

 of cost the dangerous qualities of the sewage may be wholly eliminated." The 

 hypochlorite method is considered especially efficient for this purpose and it§~ 

 application and cost are discust-ed in. some detail. 



Public water supplies, sewage disposal, and stream pollution (Ann. Rpt. 

 Bd. Health Ohio, 20 (1905), pp. 61-220, 223-291 ) .—T\\& systems followed in a 

 large number of Ohio towns are briefly described and discussed, with results 

 of examinations of a large number of samples of water proposed as public water 

 supplies. 



Farming for sewage purification, J. D. Brown (Siirreyor, 31 (1901), Mo. 

 185, p. 196). — The method followed at Consett, England, is briefly described. 

 The sewage is applied mainly to fallow land, but also to soil on which hay 

 and vegetables are grown. The purest effluents are obtained from cropped soil 

 and from soil which has received sewage for some time. 



SOILS— FERTILIZEES. 



Soils; how to handle and improve them, S. W. Fletcher (Neiv York: 

 Douhleday, Page d Co., 1901, pp. XXVIII + 438, pi. 1, figs. lU).— This is the 

 third volume of the Farm Library series and attempts " to set forth the im- 

 portant facts about the soil in a plain and untechnical manner." Different chap- 

 ters treat of soil buildei's; the nature of soils; the kinds of soils and how to 

 manage them; soil water, the benefits of tillage; the objects and methods of 

 plowing; harrowing and cultivating; rolling, planking, and hoeing; the drain- 

 age of farm soils; farm irrigation; maintaining the fertility of the soil; green- 

 manuring and worn-out soils; farm manures; and commercial fertilizers. 



The soils of Iowa, W. II. Stevenson (Farming, 3 (1901), No. 1, pp. 16, 11. 

 figs. 1). — The typical soil areas of the State are briefly described. 



On moor culture, H. von Feilitzen (Pyra Vppsatser i VaxtkuUur. Gotheti- 

 hurg, 1906, pp. l--'fl). — Practical advice is given in regard to the culture of 

 moor soils, with a resume of the results of recent e.xperiments conducted at 

 Jonkoping Moor Culture Station. 



The sand dunes of the desert of Islay (Ann. Astron. Observ. Harvard Col.. 

 39 (1906), pf. 2. pp. 281-292. figs. 2). — Observations on the formation aud move- 

 ment of these dunes are briefl.v discussed. 



