Rewards bestowed by the Society during the session 1824-25 xliv

AGRICULTURE.

RALPH CREYKE, jun., Esq. on Warping 249 acres of

Peat Moss

3

Colonel JAMES WILSON on planting 172 acres of Moor

Land with Forest Trees

12

16

Messrs COWLEY and STAINES on raising Seed from the

American Grass employed in Connecticut as the

material of Fine Plat

Mr. W. SALISBURY on the material employed in Tuscany

for Fine Plat

GEORGE WHITWORTH, Esq. on an improved variety

of Ray Grass.

CHEMISTRY.

Mr. JOHN ROBERTS on an Apparatus to enable persons

to breathe in thick smoke, or in air loaded with suffo-

cating vapours

21

23

25

Mr. L. ANSTEY on improved Melting Pots for iron and

brass-founders

Capt. T. M. BAGNOLD on preserving Lime-juice

Mr. HENRY MOORE on etching and cleaning Alabaster .

Report on an analysis of British Opium

32

37

52

54

56

POLITE ARTS.

Mr. EDMUND TURRELL on the mode of preparing Etching-

ground for Engravers

58

Mr. WILLIAM SAVAGE on his improvements in Block-

printing in imitation of coloured Drawings

67

MANUFACTURES.

Rewards given during the last session for Bonnets and

Hats made of British materials platted and knit in

imitation of those imported from Leghorn

Mrs. LowREY on a Bonnet made of doubled Wheat Straw

Mr. R. JONES on drill and sheeting made from New

Zealand flax.

82

83

MECHANICS.

Mr. C. W. WILLIAMSON on a bevelled Plane

85

Mr. T. GRIFFITHS on an expanding Wedge for the use of

Sawyers

88

Mr. CORNELIUS VARLEY on the method adopted by his
late uncle of copying Screws by means of the Lathe .

Mr. DAVID MATHEWS on an improved method of bar-

WILLIAM BROCKEDON, Esq. on a Mechanical Apparatus

to assist a weak Knee-joint

Mr. FRANCIS CLULEY on an improved Lithotomy Forceps

Capt. M. E. BAGNOLD on the process employed at Bombay

of making twisted Gun-barrels and Sword-blades, in

imitation of those made at Damascus

100

102

105

Capt. DICKINSON, R. N. on a mode of applying Percussion

powder to the discharge of Ships' Guns

109

112

Mr. C. SOCKL on a safe valve for Steam-boilers.

Mr. JOHN Сow on an improved mode of adapting a

Ship's Launch to taking up and laying down heavy

Anchors, as well as landing Artillery

Mr. ELISHA PECHEY on a Forcing Pump

119

134

Mr. JOSEPH CLEMENT on a Stand for Drawing Boards of

large area

138

Mr. WILLIAM HARDY on an Instrument for ascertaining

1-600 part of a Second of Time

438

Mr. J. AITKIN on Improvements in the Striking Part

of a Quarter Clock

147

COLIN SHAKESPEAR, Esq. on a portable Rope Bridge

M. LE CADRE on a Plantation of Cloves in the Island

of Trinidad.

195

Messrs. PETCHY and WOOD on extract of Mimosa-bark

J. MACKAY, Esq. on a Machine for eradicating the

Stumps of Trees

205

207

APPENDIX.

Capt. BAGNOLD's Steam Culinary Apparatus

213

Mr. JAMES JONES's Kiln for drying Corn

214

Messrs. PERKINS and HEATH on the prevention of Forgery

217

Observations on the Culture of Silk, by the late Archibald

PREFACE.

THE contents of the present volume consist, for the most part, of descriptions and notices of the various subjects for which the Society have bestowed medals or pecuniary rewards during the last session.

From a perusal of these, the public in general, and those members who are prevented from personally taking a part in the proceedings, may be convinced that no remission has taken place in the activity of the Society, or in the readiness of ingenious persons to submit their inventions to its judgment.

In the class of Agriculture and Rural Economy, the large gold medal has been given to Ralph Creyke, Jun., Esq., for warping, by an improved method, four hundred and twenty-nine acres of peat. It is chiefly on the shores of the Humber that the process of