66 66 defined Difficulty of..... Method of, to be adopted.. Trench machine. See Excavating machine. Trench, Storm- and house-sewer in the same. 66 Minimum, permissible in storm and combined sewers.... 74, 76 Uniform, in a system.. "house-sewers Ventilation of sewers, Methods recommended for... Sewage and the Bacterial Purification of Sewage. By Dr. SAMUEL RIDEAL. 3d edition, revised. 8vo, xii +355 pages, 58 illustrations, cloth.... Sewer Design. $4.00 By H. N. OGDEN, C.E., Assoc. M. Am. Soc. C. E, Assistant Professor of Civil Engineering, Cornell University. xi +234 pages, 12mo, cloth.. $2.00 Sewerage. The Designing, Construction, and Maintenance of By A. PRESCOTT FOLWELL. 5th edition, revised. 13 full-page plates and 38 figures in the text, cloth. Sewage Works Analyses. Sewerage Systems. 8vo, x+454 pages, .$3.00 By GILBERT J. FOWLER, M.Sc. (Vict.), F.I.C., Superintendent and 11 figures, cloth.... 12mo, vii +135 pages, .$2.00 The Sanitation of a Country House. 12mo, vii+103 pages, 16 full-page $1.00 Elements of Sanitary Engineering. By Dr. HARVEY B. BASHORE. half-tone plates, cloth.... Third edition, enlarged. By Prof. MANSFIELD MERRIMAN. 8vo, 252 pages, 46 figures, cloth..... Outlines of Practical Sanitation. .net $2.00 By Dr. HARVEY B. BASHORE. 12mo, vi+208 pages, 42 illustrations, cloth Handbook on Sanitation. By GEORGE M. PRICE, M.D. 2d edition, revised and enlarged. xv+317 pages, 31 figures, cloth... ..$1.25 12mo, JOHN WILEY & SONS, 43 & 45 EAST NINETEENTH STREET, NEW YORK CITY |