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REPERTORY

ARTS, MANUFACTURES,

AND

AGRICULTURE.

Consisting of
ORIGINAL COMMUNICATIONS,
SPECIFICATIONS OF PATENT INVENTIONS,

PRACTICAL AND INTERESTING PAPERS,

SELECTED FROM

THE PHILOSOPHICAL TRANSACTIONS AND

SCIENTIFIC JOURNALS OF ALL NATIONS.

MONTHLY INTELLIGENCE

RELATING TO

THE USEFUL ARTS,.

PROCEEDINGS OF LEARNED SOCIETIES,

AND
NOTICES OF ALL PATENTS GRANTED FOR INVENTIONS.

VOLUME IV.-SECOND SERIES.

London :
PRINTED FOR J, WYATT,
REPERTORY - OFFICE, HATTON - GARDEN.

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DUMMINA
INUSITIO
ILLUMEAT

NICHOLS and Son Printers, Red Lion Paffage, Fleet Street.

CO N T E N T S

I

OF THE

FOURTH VOLUME, SECOND SERIES.

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6

Specifications of Patents.

Page Mr. Newstead's, for preparing Barilla and Kelp, and the neu

tral Salts obtained therefrom,
Mr. Stuard's, for a Method of strengthening Ships,
Mr. CRAANEN's, for making Verdigris with Ingredients the Pro-
duce of Great Britain, -

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-

9
Mr. Gould's, for an Hydrometer,
Mr. Huddart's, for making great Cables and other Cordage, 81
Mr. Davis's, for a Machine for, and Method of, cleansing and

sweeping Chimneys, and extinguishing them when on fire, Mr. Kentish's, for an improved Derrick for loading and unload , ing Ships, -

93 Mr. Ransome's, for making and tempering Cast-iron Plough-shares, 97 Mr. Hooper's, for Machinery for cleansing Harbours, Rivers, &c. 161 Mr. Bevans's, for applying Machinery for striking or sticking Mouldings,

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-

- 171 Miss Bell's, for sweeping Chimneys, and a new Manner of con-'. structing them,

174 Meff. Roberts and CATHERY's, for eradicating Sinut from Wheat, 181 Mefl. Trevithick and Vivian's, for Improvements on Steam

Engines, and for applying them to driving Carriages, - 242" Mr. Everett's, for Salisbury Angola Mole-Skin, ' - 249 Mr. Hately's, for some reducing Fluxes for purifying Mineral and Metallic Bodies,

250 Mr. Boond's, for a new Manufacture of mixed and coloured Cotton Velvets, &c.

Mell.

252

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