Metcalf’s Cost of Manufactures—And the Administration of Workshops 8vo, 5 00 * Ordnance and Gunnery. 2 vols 12mo, 5 00 Murray’s Infantry Drill Regulations 18mo, paper, 10 Nixon’s Adjutants’ Manual 24mo, 1 00 Peabody’s Naval Architecture 8vo, 7 50 * Phelps’s Practical Marine Surveying 8vo, 2 50 Powell’s Army Officer’s Examiner 12mo, 4 00 Sharpe’s Art of Subsisting Armies in War 18mo, morocco, 1 50 * Walke’s Lectures on Explosives 8vo, 4 00 * Wheeler’s Siege Operations and Military Mining 8vo, 2 00 Winthrop’s Abridgment of Military Law 12mo, 2 50 Woodhull’s Notes on Military Hygiene 16mo, 1 50 Young’s Simple Elements of Navigation 16mo, morocco, 2 00 ASSAYING. Fletcher’s Practical Instructions in Quantitative Assaying with the Blowpipe 12mo, morocco, 1 50 Furman’s Manual of Practical Assaying 8vo, 3 00 Lodge’s Notes on Assaying and Metallurgical Laboratory Experiments 8vo, 3 00 Low’s Technical Methods of Ore Analysis 8vo, 3 00 Miller’s Manual of Assaying 12mo, 1 00 Minet’s Production of Aluminum and its Industrial Use. (Waldo.) 12mo, 2 50 O’Driscoll’s Notes on the Treatment of Gold Ores 8vo, 2 00 Ricketts and Miller’s Notes on Assaying 8vo, 3 00 Robine and Lenglen’s Cyanide Industry. (Le Clerc.) 8vo, Ulke’s Modern Electrolytic Copper Refining 8vo, 3 00 Wilson’s Cyanide Processes 12mo, 1 50 Chlorination Process 12mo, 1 50 ASTRONOMY. Comstock’s Field Astronomy for Engineers 8vo, 2 50 Craig’s Azimuth 4to, 3 50 Doolittle’s Treatise on Practical Astronomy 8vo, 4 00 Gore’s Elements of Geodesy 8vo, 2 50 Hayford’s Text-book of Geodetic Astronomy 8vo, 3 00 Merriman’s Elements of Precise Surveying and Geodesy 8vo, 2 50 * Michie and Harlow’s Practical Astronomy 8vo, 3 00 * White’s Elements of Theoretical and Descriptive Astronomy 12mo, 2 00 BOTANY.