2 0

Cotton Cultivation.

Cotton Cultivation in its various details, the Barrage of Great Rivers, and Instructions for Irrigating, Embanking, Draining, and Tilling Land in Tropical and other Countries possessing high thermometric temperatures, especially adapted to the improvement of the cultural soils of India, by Joseph Gibbs, Member Institute Civil Engineers, with 5 plates, crown 8vo, cloth

7 6

Curves, Railway.

Treatise on the setting out of Railway Curves, with full Tables of the Angles, Distances, and Offsets required, especially arranged for the use of Measurements in feet and imperial links, but also adapted for the use of any other unit of Measurement, by David Livingstone, crown 8vo, cloth

10 6

Curve Tables.

Tables for setting out Railway Curves, arranged by Chas. Pullar Hogg, C.E., a series of cards arranged for Manipulation, with a sheet of Explanations and Examples, in neat cloth case