Third Edition, with Additions, consisting of New Formulæ for the Discharge from Tidal and Flood Sluices and Siphons; general information on Rainfall, Catchment-Basins, Drainage, Sewerage, Water Supply for Towns and Mill Power. By John Neville, C.E.M.R. I.A.; Fellow of the Royal Geological Society of Ireland. Thick 12mo. $3.50

NEWBERY.—Gleanings from Ornamental Art of every style:

Drawn from Examples in the British, South Kensington, Indian, Crystal Palace, and other Museums, the Exhibitions of 1851 and 1862, and the best English and Foreign works. In a series of 100 exquisitely drawn Plates, containing many hundred examples. By Robert Newbery. 4to. $12.50

NICHOLLS.—The Theoretical and Practical Boiler-Maker and Engineer's Reference Book:

Containing a variety of Useful Information for Employers of Labor, Foremen and Working Boiler-Makers, Iron, Copper, and Tinsmiths,

Draughtsmen, Engineers, the General Steam-using Public, and for the Use of Science Schools and Classes. By Samuel Nicholls. Illustrated by sixteen plates, 12mo. $2.50

NICHOLSON.—A Manual of the Art of Bookbinding:

Containing full instructions in the different Branches of Forwarding, Gilding, and Finishing. Also, the Art of Marbling Book-edges and Paper. By James B. Nicholson. Illustrated. 12mo., cloth $2.25

NICOLLS.—The Railway Builder:

A Hand-Book for Estimating the Probable Cost of American Railway Construction and Equipment. By William J. Nicolls, Civil Engineer. Illustrated, full bound, pocket-book form. $2.00