472 New Patents. [Dec. 



The Parent's Medical and Surgical Assistant. By Thomas Ayre 

 Bromhead, MB. 12mo. 4?s. 



Zoological Illustrations, or Original Figures, and Descriptions of 

 new, rare, or interesting Animals. By William Swainson, FRS. 

 Vol.I. 21. 18s. 6d. 



A Natural History of the Crinoidea, or Lily-shaped Animals. By 

 J. S. Miller, ALS. 4to. 21. 12s. 6d. 



The Voyager's Companion, or Shell Collector's Pilot. By John 

 Mawe. 18mo. 5s. 



A Natural Arrangement of British Plants according to their Rela- 

 tions to each other, as pointed out by Jussieu, De Candolle, Brown, 

 &c. including those cultivated for Use, with the Characters, Differ- 

 ences, Synonyms, Places of Growth, Time of Flowering, and Sketch 

 of their Uses, with an Introduction to Botany, in which the Terms 

 newly introduced are explained. By Samuel Frederick Gray, Lecturer 

 on Botany, &c. with 21 Plates, in Two very large Volumes, 8vo. 

 21. 2s. 



Article XII. 



NEW PATENTS. 



John Collinge, of Lambeth, Surrey, engineer ; for an improvement 

 on cast-iron rollers for sugar-mills, by more permanently fixing them 

 to their gudgeons. — Aug. 14, 1821. 



John Nichol, of West-End, St. John's, Hampstead, Middlesex, 

 master-mariner ; for an improved capstan, windlass, and hawse-roller, 

 —Aug. 22. 



Sir William Congreve, of Cecil-street, Strand, Middlesex, Bart. ; for 

 certain improvements on his former patent, bearing date Oct. 19, 1818, 

 for certain new methods of constructing steam-engines. — Sept. 28. 



James Fergusson, of Newman-street, Oxford-street, Middlesex, 

 stereotyper and printer ; for improvements upon, additions to, or sub- 

 stitutes for, certain materials or apparatus made use of in the process 

 of printing from stereotype plates. — Oct. 18. 



Stephen Hawkins, of the Strand, Middlesex, civil engineer ; for 

 certain improvements on air-traps for privies, water-closets, close- 

 stools, and chamber conveniences, to which the same may be applica- 

 ble— Oct. 18. 



Thomas Lees. jun. of Birmingham, snuffer-manufacturer; for certain 

 improvements in the construction of snuffers. — Oct. 18. 



Peter Davey, of Old Swan-wharf, Chelsea, Middlesex, coal-mer- 

 chant; for an improved preparation of coal for fuel. — Oct. 18. 



John Poole, of Sheffield, victualler; for certain improvements in 

 plating iron or steel with brass or copper, or copper allayed with other 

 metal or metals, both plain and ornamental, for the purpose of rolling 

 .and working into plates, sheets, or bars ; and such goods or wares to 

 which the same may be found applicable. — Oct. 18. 



John Christophers, of New Broad-street, London; for certain 

 improvements on, or a substitute for, anchors. — Oct. 18. 



