TO CO-RESPONDENTS. 



Capt. V citch's Projection of the Globe on the Cylinder of a MefidiaM, 

 with the accoaipanying Memoir, has been received, and shall be noticed 

 in our nest. 



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ENGRAVINGS. 

 Vol. XLV. A Plate to illustrate the Nourishment produced to the 

 Plant by its Leaves. By Mrs. Ibbetson.— A Plate to illustrate Mr, 

 Bakewell's Sketch of the Arrangemeut of the Rocks an<^ Strata in the 

 IjJorthern Counties of England.— Plafes to illustrate Mr. Robertson 

 Buchanan's Description of die Steam-Boats on the Clyde ; and Mrs. 

 Ibbetson's Paper proving that Embryos the of the Seeds are formed in 

 the Root alone. — A Plate to illustrate Mr. John Walter's Improve- 

 ments in Naval Archicecture. — A Quarto Plate on the Roots of Plants. — 

 Plate of Mr. Singer's Electric Columns ; Mr. Walker's Electiometer ; 

 Rochon's Apparatus for ascertaining the Heat of coloured Rays. 



Vol. XLVI. Mr. T. Jones's New'Rcflecting Comp:.>s. — Mr. Woolf's 

 Patent Boiler for Steam Engines and otl^^r Purposes. — A Piaie to. illus- 

 trate Mr. Woolf's Improvement on the Steam-Engine, by which the 

 possibility of Steam escaping past the side of the Piston is efiectuaiiy pre- 

 vented. A Plate to illustrate some Electrical Experiments by M.I) eNe lis 



of Malines ; with an Extension of them by Mr. Singer and Mr. Crosse. 



A Plate to illustrate the Electrical Experiments ofM. De Nklis of 



Malines. — Woolf's improved Steam-Engine. — A Plate to illusinite Mr. 

 Evans's Paper on guiding Balloons through the Atmosphere. — A Plate 

 illustrative of Dr. Brewster's Paper on Light. — A Quarto Plate to il- 

 lustrate Sir H. Davy's Paper on the Fire-damp of Coal-Mines, and on 

 Methods of lighting the Miues so as to prevent its explosion ; and the Ac- 

 count of Mr.'STKPHENsoN's Sufe-Lamp for Coal-Mines. 



Vol. XLV 1 1. Illustrated with a Quarto Plate describing the Plani- 

 sphere of Dendera, — A Quarto Plate to illustrate Mr. Brown's Papier 

 on Architecture. — A-Plate to illustrate Sir George Caylev's Paper on 

 Aerial Navigation ; and Mr. London's Hydrometer. — A Quarto Plate 

 of the Temple of Kournou at Thebes. — A Plate of the new Baths at 

 Ramsgate. • . . 



Vol. XLVIII. AQuarto Plate of the Strand or Waterloo Bridge erected 

 over the Tham.es at the Savoy, London. — A Quarto Plate to illustrate 

 Mrs. Ibbetson's Anatomy of Vegetables. — A Quarto Plate to illustrate 

 Mrs. Ibbetson's Paper on the Phys-iology of Vegetables. — A large Quarto 

 Plate to illustrate Mrs". Ibbetson's Paper on a new View of Vegetable Life. 

 — A Quarto Plate to illustrate Mrs. Ibbetson's Paper on the Physiology 

 of Vegetables ; and Mr. Morn ay's Mass of Native Iron found in Brasil. 



Vol. XLIX. A Plate to illustrate Dr. Evans's Communication on 

 Terrestrial Magnetism ; a new Electro-atmospherical Tr.strnment; and 

 Mr. AwDREw Hoxn's Paper on Vision. — A Quarto Plate to illustrate 

 Mrs. Ibbetson's Physiology of Vegetables. — A Plate to illustrate tlie 

 Sokr Spots which appeared during the Yearl8l6; — and Mr. Bevan's 

 Improvement on the Sliding-Rule. — A Plate descriptive of Mr.EMMKTr's 

 Instrument for the Measurement of the Moon's Distance from the Sun, 

 &c. i also a New Reflecting Goniometer. — A Plate to illustrate Chevalier 



