JOSEPH TOURNIER. A Map of Italy, and a Post Guide through Russia. WALTER WELDON. A popular Explanation of the Elements and General Laws of Chemistry. By Walter Weldon. 8vo. FRANCIS WHISHAW. A Drawing of Spitalfields Church. R. WILLIAMSON. Two Impressions from a soft steel plate, after 200,000 copies had been taken. J. WYATT. The Repertory of Arts for 1825. 8vo. WILLIAM WYON. An Impression of a Seal engraved by Mr. Wyon for the Athenæum, from a design and under the direction of Sir Thomas Lawrence. A CATALOGUE OF THE MODELS, MACHINES, &c. &c. RECEIVED SINCE THE PUBLICATION OF THE FORTYSECOND VOLUME OF TRANSACTIONS. IN AGRICULTURE.-CLASS I. Messrs. Cowley and Staines's Seed from the American Grass. See page 16. Mr. G. Whitworth's Seed of Perennial Rae Grass. See page 23. IN CHEMISTRY AND MINERALOGY.-CLASS II. Mr. J. Roberts's Apparatus to enable Persons to Breathe in Air loaded with Smoke, &c. See page 25. Mr. H. Moore's Mode of etching and cleaning Alabaster. See page 54. Mr. L. Anstey's Melting Pots for Iron and Brass-foundSee page 32. ers. Mr. W. Sturgeon's improved Electro-magnetic Apparatus. See See page 37. 85. IN MECHANICS.-CLASS III. Mr. W. Friend's Lock. See page 114. Mr. J. P. Hubbard's folding Chair. See page 99. Mr. T. Griffiths's Expanding Wedge for Sawyers. See page 88. Mr. E. Pechey's Pump. See page 134. Mr. T. Cluley's Lithotomy Forceps. See page 102. Mr. W. Brockedon's Mechanical Apparatus to assist a weak Knee-joint. See page 100. Mr. J. Aitkin's improved Quarter Clock. See page 147. Mr. W. Hardy's Instrument to ascertain very small Intervals of Time. See page 142. Captain T. Dickinson's Mode of applying Percussion Powder to the discharge of Ships' Guns. See page 109. Mr. J. Cow's improved Mode of conveying Anchors and Cannons, by means of a Ship's Launch. See page 119. Mr. A. Ainger's Centering for Arches of wide Span. See page 188. Mr. C. Sockl's Safe Valve for Steam Boilers. See page 112. Mr. C. Shakespear's Portable Rope Bridge. See page 160. Mr. R. Jones's Cloth, made of New Zealand Flax. See page 83. IN COLONIES AND TRADE.-CLASS V. Messrs. Petchey and Wood's Extract of Mimosa Bark. See page 205. Mr. Le Cadre's Cloves. See page 195. LIST OF PLATES. Frontispiece-Mr. Shakespear's Portable Rope Bridge. Mr. Roberts's Apparatus for enabling a Person to Breathe in thick Smoke. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Mr. Sockl's Steam Valve. Mr. Williamson's Plane. Captain Dickinson's Percussion Lock for Cannon. Mr. Anstey's Melting Pots. Mr. Sturgeon's Electro-magnetic Apparatus. Mr. Varley's Machine for Copying Screws. Mr. Matthews's Apparatus for Barrowing out Soil. Mr. Hubbard's Folding Chair. Mr. Brockedon's Apparatus for relieving a particular kind of Lameness. Mr. Cluley's Lithotomy Forceps. Mr. Cow's mode of fitting a Ship's Launch. Mr. Clement's Drawing Table. S Mr. Hardy's Apparatus for measuring small Fractions of Time. Mr. Aitkin's Quarter Clock. Ditto. Mr. Shakespear's Portable Rope Bridge. Captain Bagnold's Steam Boiler. Mr. McKay's Apparatus for eradicating the Stumps of Trees. Two Plates, by Messrs. Perkins and Heath, of Specimens for Bank-notes. |