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Conservancy, or Dry Sanitation versus Water Carriage. By J. Donkin. 7 plates, 33 pp., 8vo, sewed. (1906.) 1s. net.

Sewage Disposal Works. By W. C. Easdale. 160 illus., 264 pp., 8vo. (1910.) 10s. 6d. net.

House Drainage and Sanitary Plumbing. By W. P. Gerhard. Eleventh ed., 6 illus., 231 pp., 18mo, boards. (New York, 1905.) 2s. net.

The Treatment of Septic Sewage. By G. W. Rafter. 137 pp., 18mo, boards. Third ed. (New York, 1913.) 2s. net.

Reports and Investigations on Sewer Air and Sewer Ventilation. By R. H. Reeves. 8vo, sewed. (1894.) 1s.

Sewage Drainage Systems. By Isaac Shone. 27 folding plates, 47 illus., 440 pp., 8vo. (1914.) 25s. net.

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