THE GIFT OF A. A. Pub. Lib. By Prof. W. Allan. ND TUNNEL CENTRES. By John B. VALVES. By Richard H. Buel, C. E. No. 22.-HIGH MASONRY DAMS. By John B McMaster. No. 23. THE FATIGUE OF METALS UNDER REPEATED STRAINS, with various Tables of Results of Experiments. From the German of Prof. Ludwig Spangenberg. With a Preface by S. H. Shreve No. 24.-A PRACTICAL TREATISE ON THE TEETH OF WHEELS, with the Theory of the Use of Robinson's Odontograph. By Prof. S. W. Robinson. No. 25.-THEORY AND CALCULATIONS OF CONTINUOUS BRIDGES. By Mansfield Merriman, C. E. No. 26.-PRACTICAL TREATISE ON THE PROPERTIES OF CONTINUOUS BRIDGES. By Charles Bender. No. 27.-ON BOILER INCRUSTATION AND CORROSION. By F. J.Rowan. No. 28.-ON TRANSMISSION OF POWER BY WIRE ROPES. By Albert W. Stahl. No. 29.-INJECTORS; THEIR THEORY AND USE. Translated from the French of M. Leon Pouchet. No. 30-TERRESTRIAL MAGNETISM AND THE MAGNETISM OF IRON SHIPS. By Prof. Fairman Rogers. No. 31.-THE SANITARY CONDITION OF DWELLING HOUSES IN TOWN AND COUNTRY. By George E. Waring, Jr. No. 32.-CABLE MAKING FOR SUSPENSION BRIDGES, as exemplified in the construction of the East River Bridge. By Wilhelm Hildenbrand, C. E. No. 33.-MECHANICS OF VENTILATION. By George W. Rafter, C. E. No. 34.-FOUNDATIONS. By Prof. Jules Gaudard, C. E. Translated from the French. No. 35.-THE ANEROID BAROMETER: Its Construction and Use. Compiled by Prof. G. W. Plympton. 3d Edition No. 36.-MATTER AND MOTION. By J. Clerk Maxwell No. 39.-A HANDBOOK OF THE ELECTRO-MAGNETIC ᎢᎬᏞᎬᏀᎡᎪᏢᎻ . By A. E. Loring, a Practical Telegrapher. 2d Edition. No. 40.-TRANSMISSION OF POWER BY COMPRESSED AIR. By Robert Zahner, M. E. No. 41.-STRENGTH OF MATERIALS. By William Kent. No. 42.-VOUSSOIR ARCHES, applied to Stone Bridges, Tun nels, Culverts and Domes. By Prof. Wm. Cain. No. 43.-WAVE AND VORTEX MOTION. By Dr. Thomas Craig, of Johns Hopkins University. |