ENGRAVINGS. 



Vol. XLIV. A Plate to illustrate Mr. Hume's Gazometer and Blqw- 

 pipe ; a Proposal for an Improvement of the Gsflvanic Trough ; and a 

 new Apparatus for preparing pare Muriatic Acid. — A practical Diagram 

 for obtaining the Lunar Distances observed hj a Sextant. — Electrical 

 Apparatus to illustrate ^Ir. Brande's Paper on some new Electrical 

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

 Cuticle of Leaves, — Brunton's Patent Chain Cable.—f Figures relative to 

 Dr. Brewster's Paper on the Affections of Light transmitted through 

 crystallized Bodies.— A Plate to illyistrate Dr. Brev^stkr's Paper given 

 in our last Number. 



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

 Plant by its Leaves. By Mrs. Tb-setson. — A Plate to illustrate Mr. 

 Bakewiill's Sketch of the Arrangement of the Rocks and Strata in ti^e 

 Northern Counties of England. — Plates to illustrate Mr. Robertsom 

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

 Ibbetson's Paper proving that'tlie Embryos of the Seeds are formed ii> 

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

 ments in Naval Architecture. — A Quarto Plate on the Roots of PLints. — 

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

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

 ■ Vol. XLVI. Mr.T. Jones's New Reflecting Compass. — Mr. Woolf's 

 Patent Boiler for Steam Engines and other Purposes.^ — A Plate to illus- 

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

 possib'rlity of Steam escaping past the side of the Piston is effeetually pre- 

 vented. — A Plate to illustrate some Electrical Experiments by M.DeNeli* 

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

 — A Plate CO illustrate the Electrical Experiments of M. D.e Nelis of 

 Malines. — Woolf's improved Stearp-Engine. — A Plate to illustrate Mr. 

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

 illustrative of Dr. Brew sTER's-Pape'r. on Light. — A 4to Plate to illu:- 

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

 thods of lighting the Mines so as, to prevent irs Explosion ; and the Ac- 

 count of Mr. Stephen son's Safe-Lamp for Coal-Mines. 



Vol. XLVII. Illustrated with a Quarto Plate describing the Plani- 

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

 'on Architecture. — A Plate to illustrate Sir George Cayley's Pjperon 

 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. A Quarto Plate of the Strand or Waterloo Bridge erected 

 over the Thames at the S.ivoy, London.^A Quarto Plate to illustrate 

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

 Mrs. Ibbetsofl's Paper on the Physiology of Vegetables. — A large Q^uarto 

 plate to illustrate Mre. Ibuetson's Paper on a new Viewof Vegetable Life. 

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

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



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

 Terrestrial Magnetism ; a new Electro-atmospherical Instrument ; and 

 Mr. Andrew Horn's Paper on Vision. — A Quarto Plate to ipaitrate 

 'IJlr'i. Ibbetson's Physiology of Vegetables. 



