JOHN WARREN, of the town and county of the town of Poole, Stone-mason; for an apparatus to prevent chimnies from smoking, and to extinguish fires in grates and stoves without making any dust or smoke injurious to the room or furniture, Dated September 15, 1808. Specification to be enrolled within one month.

EDWARD MASSEY, of Newcastle, in the county of Stafford, Clock and Watchmaker; for an improved cock for drawing off liquors. Dated September 24, 1808. Specification to be enrolled within one month.

THOMAS PATON, of the parish of Christ Church, in the county of Surrey, Engineer; for an improved wheel for various useful purposes. Dated September 24, 1808. Specification to be enrolled within one month.

SEBASTIAN ERARD, of Great Marlborough-street, in the county of Middlesex; for certain improvements upon piano fortes, large and small, and upon harps, for which harps he has already obtained letters patent. Dated September 24, 1808. Specification to be enrolled within six months.

END OF THE THIRTEENTH VOLUME. SECOND SERIES.

INDEX

TO THE

THIRTEENTH VOLUME, SECOND SERIES.,

A

AIR-Jacket, patent for one for swimming,

Alkalies, fixed, on their decomposition by electricity, 123;'
methods used for their decomposition, 124; theory of
their decomposition, composition, and production, 128,
175; on the nature of alkaline bodies in general,
Ammonia, observations on its nature,

Andrews, Mr. P. Improvements on wheel carriages,
Apthartic Viands, patent for them,

Arts, Manufactures, &c. intelligence relating to,

B

-

Banks, Sir Joseph. Account of the method of cultivating the

American Cranberry at Spring Grove,

Bats or Gripes in Horses, efficacy of laudanum as a remedy
for that disorder,

-

Bell, Lieutenant John. Account of a method of throwing a
rope on shore by means of a shell from a mortar on
board a vessel in distress, 315; observations on throw-
ing a line on shore in case of a ship being stranded,316;
on the application of the mortars for that purpose,
Birch, Mr. Charles Lucas. Patent for an improvement in the
construction of the roofs and upper quarters of landaus
VOL. XIII. SECOND SERIES.

Hhh

Page

303

190

ib.

308

34

61

325

321

318

and

and other carriages, the upper parts of which are made
to fall down, 161; observations on his method,
Boswell, John Whitley, Esq. Description of a capstan which
works without requiring the messenger or cable to be
ever surged, 204; account of the third voyage of the
ship Economy, built according to his patent-plan,

C

Page

Calomel, patent for a method of preparing it for medicinal

Caparn, Mr. James. Patent for a machine for discharging

162

249

79

smoke from smoking chimnies, -
Capstan, description of one which works without requiring
the messenger or cable being ever surged,
Carriages, patent for an improvement in the roofs of such
whose upper parts are made to fall down,
Chapman, Mr. W. On the distinctive difference between his
and Mr. Curr's Patents for flat ropes,
Chichester, Earl of. Account of the produce of milk and
butter from one cow,

157

204

161

38

385

Coal, account of the application of the gas from it to eco-

nomical purposes,

262

Cobb, Mr. William. Patent for an air-jacket and shoes for
swimming,

303

Cocks, patent for a method of constructing them,
Cochrane, Major Spencer. On the use of tar for cattle swelled
by eating clover, 321; on the efficacy of laudanum as
a remedy for the bats or gripes in horses, ib.; on the
culture of white poppies for opium, 323; recipe for
colds and coughs,

Cogan, Dr. On the cultivation of the poppy,

159

324

109. 165. 355

Coleman, Mr. Edward. Patent for improvements in the con-

struction and application of a horse-shoe,

304

Cordage, patent for improvements in making it,

289

Cork-jackets, observations on, with directions for makingthem,374
Cow, account of the produce of milk and butter from one,

385

Cowan,

Cowan, Captain. Account of his improved sails for ships and
vessels of all descriptions,
Cranberry, American, account of the method of cultivating
it at Spring Grove,

Cumming, Alexander, Esq. On giving intensity of pressure
to the wheels of heavy carriages,
Curr, Mr. Difference between his patent for flat ropes and
Messrs. Chapman's, 38; patent for an invention for
spinning hemp for making ropes or cordage,

D

Daniel, Mr. F. C. Description of an apparatus to secure

Page

253

325

328

297

persons from sinking in water,
Davis, Mr. Thomas. His answers to the questions proposed
by the Commissioners of Naval Revision, respecting the
state of oak-timber,

310

274

123. 175

83

Davy, Humphry, Esq. His Bakerian Lecture, on the de-

composition of fixed alkalies by electricity,
Dibdin, Mr. Charles. Patent for a method of facilitating the
learning of music,

Dickenson, John, Esq. Letter on Mr. Daniel's life-preserver, 313
Dickson, Mr. John. Patent for a method of constructing

Donkin, Mr. Bryan. Patent for producing a rotary motion, 36
Dry-rot, circumstances under which it takes place, 95;

means of preventing it,

106

Dunbar, Mr. John. On the cultivation of the common flax

as an ornamental plant in the flower-garden,

270

E

Economy, account of the third voyage of that ship, built

according to Mr. Boswell's patent plan,

249

210

Escapements, on the construction of their teeth,

F

Falconer, Rev. Thomas. Remarks on the use of soap-suds as

a manure,

Filtering apparatus, description of a cheap one,

Hhh 2

1 119

43
Fire-

:

Page

Fire-escape, patent for a new one,

299

Fischer, Mr. C. A. Observation on the oil of Provence,

167

Flax, on its cultivation as an ornamental plant in the flower-

270

garden,

Forcing-frame, for raising Plants and Fruits, patent for one, 81
Fourdrinier and Gamble, Messrs. Patent for making paper

by means of machines,
Frost, Mr. Joseph. Description of a threshing machine made

217

by him,

213

G

Graham's Dead-beat, improvements on it,

375

Grapes, account of a method of hastening their maturation, 200

H

Hall, Mr. John. Patent for improvements in making ropes

289

and other cordage,
Harper, Mr. Edward. Letter respecting Capt. Cowan's sails, 257
Harriott, John, Esq.

Hawkes, William, Esq. Patent for improvements on mu-
sical-keyed instruments of twelve fixed tones,
Hawkins, Mr. J. I. Description of a cheap apparatus for fil-
tering water, 43; description of an improvement on
tide-mills,

248

259

Hemp, patent for an invention for spinning it for making
ropes or cordage,..

297

Hollich, Ebenezer, Esq. Letter to Dr. Cogan on the cultiva-

tion of the poppy for oil,

355

Hooker, Mrs. Remarks on a method of making a composi-

tion for painting in imitation of the ancient Grecian

manner,

Hornby, Capt. Letter respecting Capt. Cowan's sails,

I

Instruments, musical, patent for improvements on those with

keys of twelve fixed tones,

Irwin, Mr. G. Account of an experiment on soap-suds as a

manure,

88

258

248

119

J Jefferson,