21

.

278

Peale, F., table of properties of metals,

375
Penholders, whalebone

437
Pianos, cast-iron

436
Pinkus pneumatic railway,
Plants, preservation of, in brine,

366
Platinum points, substitutes for

427
Plummer blocks, &c. for steam engines, Baldwin's patent

273
Popular Science, new Journal of

ib.
Potassa and soda, mode of ascertaining their proportions when mixed,

305
Potash, making, Williams' patent,

272
Power, obtaining, for propelling cars, &c., M'Grew's patent,

352
Pump for feeding steam engine boilers, by C. Potts, C. E.

302
Quadrant, the

286
Quicksilver engine, Howard's,

142 bis.

R
Rails, authorship of mode of setting,

140 bis.
Railway, Greenwich, project

437
- pneumatic

21
undulating

141 bis.
Rail-road from the Ohio to South Carolina,

101
West Philadelphia,

174
turning short curves on, Stimpson's patent,
from Hartford to Canadian line,

428
apparatus for transportation on canals and, Elgar's patent,

418
Rain, Franklin's hypothesis, notice of, by Prof. A. D. Bache,

106
at different elevations,

286
proportion of drainage to fall of

427
Rotary steam engine, Avery's remarks, &c. on

172
Rotary steam engine, Foster & Avery's patent,

279
Rutter's heat process,

68
S
Saddles, riding. Van Horn's patent,

59
Salt-water, action of, on cast-iron

437
Sandy and Beaver canal, report on, by E. H. Gill, C. E.

23
Sausage meat, cutting, &c., Keagy's patent,

61
Schuylkill navigation co., business of the

431
Seeds, hulling cotton and other, Ambler's patent,

421
Slingle beaches, on the motions of, by H. R. Palmer, C. E.

135 bis.
Silk worms, rearing of, Gay's patent,

349
Sky, colour of, at considerable heights,

ib.
- as seen from high mountains

434
Smelting iron, effect of velocity in blast for

281
Soda and potash, mode of ascertaining their proportions when mixed,

305
Spark arrester, A. C. Jones',

100
-, report on A. C. Jones',

249
Specific gravity, and composition of glass,

66
Spontaneous combustion, by M. Scanlan,
Springs, Artesian wells, and spouting fountains, Arago on

364
Statute of brick and mortar

437
Steamboat Lexington

436
Canadian twin

437
Steam engine, experiments for safety
of

141 bis.
boilers, explosions of

1,73, 145, 217, 289
boat Wm. Gibbons, explosion of the boiler of

298
engine, Avery's rotary

172
engine boilers, pump for feeding, by C. Potts, C. E. :

.

424
133

.

Stove, improved, Mott's patent,

133
combined, Mott's patent,

134
rotary, Stanly's, decision of U. S. court,

165
Sugar from plants of the temperate zone,

171
Sugar, beet root

436
preparation of, from starch,

427
Sulphuric acid, arsenic in English

435
Sulphuric springs, analysis of the waters of the Gray

435
SPECIFICATIONS OF AMERICAN PATENTS.
Riding saddles—Van Horn's,

59
Flasks for moulding iron tea kettles
, &c. - David Stewari's,

60
Cutting sausage meat, and stuffing sausages-Abraham and John Keagy's, 61
Washing and churning machine-Charles Otis',

62
Slide valves for steam engines—A. M. Eastwick's,

132
Improved stove—J. L. Mott's,
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',

272
Plummer blocks and slides-Baldwin's,

273
Destroying weevils in grain-Lee's,

274
Distilling spirits of turpentine-Jennings',

275
Improvement in public finance-Golder's,

277
Turning short curves upon rail-roads-Stimpson's,

278
Rotary steam engine-Foster and Avery's,

279
Rearing of silk worms-Gamaliel Gay's,

349
Doffer
for wool carding machines—Parkhurst's,

351
Propelling cars, boats, &c.--Alexander M'Grew's,

352
Apparatus for boiling liquids-Steele's,

353
Apparatus for transportation on canals and rail-roads—Elgar's,

418
Apparatus for raising vessels-Porter's,

420
Machine for hulling
cotton, and other seeds-Ambler's,

421
T
Tannate of gelatin, application of, to taking casts from medals,

361
Tellurium, and its compounds with oxygen,

283
Thames Tunnel

429
Tidal motion of conductors, by J. W. Draper

, M, D.

27
Tide and wind, registering the variations of

434
Tide observations in the United States, notice of,

108
Time Ball at Greenwich

432
Trinidad, mineral pitch Lake of

437
Turpentine, distilling, Jennings' patent,

275
U

v
Undulating railway,

141 bis.
Vapour cave at Pyrmont,

366
Valves, slide, for steam engines, Eastwick's patent,

132
Velocity, effect of, in blast for furnaces,

281
Vessels, apparatus for raising, Porter's patent,

420

W
Walker, S. C, on solar eclipse of May, 1836,

246
Washing and churning machine, Otis' patent,

62
Water, quantity supplied by London companies,

142
Waste cock, substitute for, to hydrants, by R. Cornelius,

22
Water proof fabric,

365
Wax, preserving marble by

436
Weevils, &c., in grain, destroying, Lee's patent,

274
West Philadelphia rail-road, report on the

174
Whalebone pen holders

437
Wheels, carriage, best form of,

67
Wind, register the variations of tide and

434
Wood, preserving, from dry rot,

282
proportion of ashes in different parts of

ib.
Wool cards, doffer for, Parkhurst's patent,

351
York column, erection of the

437

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 NAT

URAL 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;

KENNEDY & ELLIOTT, WASHINGTON CITY; E. I. COALE & CO.
BALTIMORE; G. & C. CARVILL & CO., NEW YORK; AND

JOSEPH II. FRANCIS, BOSTON.