PUBLISHED BY W. NEWTON, AT THE OFFICE FOR PATENTS, 66, CHANCERY
LANE, AND TOWN HALL BUILDINGS, MANCHESTER; SHERWOOD, GILBert,
AND PIPER, PATERNOSTER ROW; SIMPKIN AND MARSHALL, STATIONERS'
COURT; AND GALIGNANI'S LIBRARY, RUE VIVIENNE, PARIS.

1843.

R. FOLKARD, PRINTER, DEVONSHIRE STREET,

QUEEN SQUARE.

LIST OF PLATES IN VOL. XXI.

[CONJOINED SERIES.]

I. Smith and Hacking's Spinning Machinery; Reynolds' Improvements in Paving; Wood's ditto; Mortimer's ditto; Gurney's ditto; Bentall's Ploughs; and Crossfield's Improvements in Manufacturing Glass.

II. Smith and Hacking's Spinning Machinery; Williams' Trusses; and Shrapnel's Corkscrew.

III. Massey's Ship's Log; Hansom's Vehicles; Galloway's Steam Engine; Stothert's Ship's Hearth; and Croft's Lace Machinery.

IV. Lawson's Spinning Machinery; Berry's Improvements in the Manufacture of Potash and Soda; Travis' Machinery for Preparing Cotton for Spinning; and Nuttall and Holden's Trouser-strap Fastenings.

V. Defries' Gas Meters; Starkey's Percussion Caps; Mertens' Improvements in Paving; Harlow's ditto; and Poole's Improved Furnaces.

VI. Henson's Improved Knitting Machinery.

VII. Allarton's Machinery for Blooming Iron; Davis' Sealing

wax; Mannering and Harrison's Pumps; Ratcliff's

Improved Door Hinge; Berry's Lock; and Robinson's
Drying Apparatus.

VIII, Henshall's Improvements in Making Carpets; Rodway's
Horse Shoe; Boccius' Gas Burner and Chimney;

Grant's Improved Horse Rake; and Haley's Lifting
Jack.

IX. Miller's Improvements in Calico Printing; Molineux's
Candle Lamp; and Knowles' Machinery for Preparing
Cotton.