418 EXPERIMENT STATION RECORD. 



is by no means a difficult matter to obtain a good supply in sufficient abundance 

 for bouse and stock use. 



Water supply for country homes, K. A. McVey (Univ. Mo. Engin. Expt. 

 Sta. Bui. 2, PI). 35~5Jf, figs. 5). — "It is tbe purpose of tbis bulletin to outline 

 some metbods of water supply, draw attention to tbe importance of tbe sanitary 

 aspect of tbe supply, and to give an idea of tbe cost of making sucb improve- 

 ments." Tbe bulletin deals witb springs, wells, and cisterns as sources of 

 supply, and describes various metbods of making tbe supply available in tbe 

 house. Tbe possibility of introducing plumbing into bouses already built is 

 also discussed. 



Potable water supply for rural communities, A. Theunis {Rev. G&n. 

 Agron., n. set:, 5 (1910), Nos. 9, pp. 353-360; 10, pp. 397-411).— This is a report 

 presented to tbe Superior Council of Agriculture of Belgium, dealing witb tbe 

 character of tbe rural water supplies in tbat country and tbeir improvement. 

 It is based upon a wide study of tbese supplies. 



It is stated tbat tbe greater part of tbe well waters are contaminated and 

 unfit for buman use, and tbat tbese contaminated waters are tbe cause of 

 various diseases, particularly typhoid fever. Tbe report makes tbe general 

 recommendation tbat wells and local sources of water supply be abandoned and 

 tbat tbe supplies for the different communities be brought fi'om a distance 

 where there is less danger of contamination. 



Sterilization of polluted water by ultraviolet rays at Marseille, France 

 (Engin. News, 64 (1910), No. 23, p. 633, fig. 1; Eng'in. Rec, 62 (1910), No. 24, 

 p. 672, fig. 1). — An apparatus, which sterilized 1.330 cu. ft. per kilowatt hour, is 

 described. 



Bacterial purification of sewage waters, Mahieu (Ann. Fonts et Chaiiss6es, 

 8. set:, //? (1910), pt. 1, No. 5, pp. 87-133, pis. 4, figs. 6).— Various metbods used 

 in purifying tbe sewage of Paris before it is discharged into tbe Seine are de- 

 scribed, and tbe efficiency of tbe methods is discussed. 



Sanitation and sewage disposal for country homes, W. C. Davidson ( Univ. 

 Mo. Engin. Expt. /S.7«. Bill. 3, pp. 55-72, figs. 6). — This bulletin explains the 

 necessity for home sanitation and describes systems and methods adapted to tbe 

 country home, including methods of disposing of dry sewage, the use of cess- 

 pools and septic tanks, sewage irrigation, and discbarge into running streams. 

 A system of iilumbing adapted to country bouses is described. 



A new method of handling sewage sludge, K. Imhoff and C. Saville 

 (Engin. Rec, 62 (1910), No. 2-'/, pp. 673-676, figs. 12). — A system in use in tbe 

 Ems district of southwestern Germany, in which tbe sludge is separated out 

 and allowed to decompose in deep wells under water pressure which holds tbe 

 gases produced during decomposition in tbe sludge, is described. Tbe sludge 

 is dried on beds, yielding a material which is consideretl much more valuable 

 as a fertilizer and for general use than ordinary sludge. 



SOILS— FERTILIZERS. 



Soils and fertilizers, T. Dietrich, C. Schaetzlein, and A. Stift (JahresJ)er. 

 Agr. Chem., 3. srr.. 12 (1909), pp. 38-175). — Tbis is a review of recent scientific 

 literature on tbt'se subjects similar to those of previous years. 



The use of photography in agronomy, and especially in the study of soils, 

 J. Schroeder (Agro^, 2 (1910), No. 1, pp. 4-14, figs. 7). — Tbe great value of 

 photography as a means of preserving a permanent record of physiographic 

 conditions, character and condition of soils, and growth of plants is discussed 

 and illustrated. 



