Popular Science, new Journal of Potash, making, Williams' patent, Power, obtaining, for propelling cars, &c., M'Grew's patent, Quicksilver engine, Howard's, 21 366 427 273 ib. Potassa and soda, mode of ascertaining their proportions when mixed, 305 272 352 302 West Philadelphia, Quadrant, the turning short curves on, Stimpson's patent, from Hartford to Canadian line, apparatus for transportation on canals and, Elgar's patent, Rain, Franklin's hypothesis, notice of, by Prof. A. D. Bache, 286 142 bis. R 140 bis. 437 21 141 bis. 101 174 278 428 418 106 286 427 172 279 68 S Shingle beaches, on the motions of, by H. R. Palmer, C. E. Smelting iron, effect of velocity in blast for Soda and potash, mode of ascertaining their proportions when mixed, 281 Springs, Artesian wells, and spouting fountains, Arago on Statute of brick and mortar Canadian twin Steam engine, experiments for safety of boilers, explosions of 364 437 436 437 141 bis. 1,73, 145, 217, 289 boat Wm. Gibbons, explosion of the boiler of 298 -, on Mr. Perkins' suggestions regarding the explosions of 369 Flasks for moulding iron tea kettles, &c.-David Stewart's, Stove, improved, Mott's patent, combined, Mott's patent, -, rotary, Stanly's, decision of U. S. court, -, preparation of, from starch, Sulphuric acid, arsenic in English Sulphuric springs, analysis of the waters of the Gray SPECIFICATIONS OF AMERICAN PATENTS. Riding saddles-Van Horn's, Cutting sausage meat, and stuffing sausages-Abraham and John Keagy's, 133 134 165 171 436 427 435 435 59 60 61 Washing and churning machine-Charles Otis', 62 Slide valves for steam engines-A. M. Eastwick's, 132 Improved stove-J. L. Mott's, 133 combined stove-J. L. Mott's, 134 Spreading India rubber upon cloth-Wm. Atkinson's, 270 Preparing and leaching ashes, and making potash—Elijah Williams', Apparatus for transportation on canals and rail-roads-Elgar's, Tannate of gelatin, application of, to taking casts from medals, JOURNAL OF THE FRANKLIN INSTITUTE OF THE State of Pennsylvania AND MECHANICS' REGISTER. DEVOTED TO MECHANICAL AND PHYSICAL SCIENCE, CIVIL ENGINEERING, THE ARTS AND MANUFACTURES, AND THE RECORDING OF AMERICAN AND OTHER PATENTED INVENTIONS. EDITED BY THOMAS P. JONES, M. D. MEMBER OF THE AMERICAN PHILOSOPHICAL SOCIETY, OF THE ACADEMY OF NATURAL SCIENCES, PHILADELPHIA, THE AMERICAN ACADEMY OF ARTS AND SCIENCES, MASSACHUSETTS, AND corresponDING MEM BER OF THE POLYTECHNIC SOCIETY OF PARIS. NEW SERIES. VOL. XVIII. PHILADELPHIA: PUBLISHED BY THE FRANKLIN INSTITUTE, AT THEIR HALL; |