NAVAL SCIENCE.

KELVIN (Lord).—Popular Lectures and Addresses.—Vol. III. Navigation. Cr. 8vo. 7s. 6d.

ROBINSON (Rev. J. L.).—Marine Surveying, An Elementary Treatise on. For Younger Naval Officers. Illustrated. Cr. 8vo. 7s. 6d.

SHORTLAND (Admiral).—Nautical Surveying. 8vo. 21s.