\- ' ENGRAVINGS. 



Vol. XLI1. A Plata contatalng Professor Leslie's Atmometer, and 

 Figures to illustrate Dr. Wollaston's Paper on the elementary Particle3 

 ' of certain Crystals. — A Sk-tch of tbat Part of the Island of Java which 

 contains the na< ural Lake ct Sulphuric Acid .—Interior of Volcano in the 

 ' Island of Java, and Figures to u\<istrate Mr. Walker's Paper on the Elec- 

 tric Fluid. — A Plate to .illustrate M. Link's Memoir on the Anatomy of 

 Plants, and Dr. Wollaston's Cryt-phorus. — A third Plate to illustrate 

 M. Link's Me noir on the Anatomy of Plants.- — Mr, T. Jones's Secto- 

 graph, — a new Instrument for dividing right Lines into equal Parts, measur- 

 ing Angles, p.nd inscribing Polygons «i the Circle, &c. 



Vol. XLIII. A Plate to illustrate a New Transit Instrument invented 

 by Sir H. C Englbfield, Bart.. — A Plate 1 to illustrate the Use__ of Air- 

 Vessels in Plants." By Mrs. Ibbejtson. — A Plate to illustrate "M. Se- 

 mentini's new Apparatus tor producing Oxygen Gas to tester;© sus- 

 pended Animation— - Mr. Reade's Paper on the Refraction of the. Solar 

 Rays — and Mr. Har'greayes's Observations ok Colours. — A Plate to 

 illustrate Mr. J. Whitfo^d's mechanical Substitute for Leeches; and Mr. 

 J. Tillev's Hydro-pneumatic Blow-pipe. — A Plate to describe Mr. 

 R. Hughes's Gudgeon for the Shaft of a Wate--wheel ; and Mr. Pad- 

 rury's Guard for a Carriage-wheel.— A Plate to describe Captain Peat's 

 Temporary Ship's Rudder.— A Quarto Plate of Mr. Samuel Jones's 

 ■Sofa Bed. 



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



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



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



' for obtaining the Lunar Distances observed by a Sextant. — -Electrical 



Apparatus to illustrate Mr. Brande's Paper en some new Electrical 



ftomena.— A Ouarto Plate to illustrate Mrs. Ibbetson's Paper on the 



•Cuticle c-f Leaves. — .Brunton's Patent Chain Cable. — Figures relative to 



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



taili/.ed Bodies. — A Plate to illustrate Dr. Brewster's Paper given 



in otn- last Number. 



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

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

 Bakewell's Sketch of the Arrangement of the Rocks and Strata in the 

 Northern Counties of England. — Plates to illustrate Mr. R,obert30n 

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

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

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

 ments in Naval Architecture. — A Ouarto Pl.te on the Roots of Plants. — 

 An Octavo Plate of Mr. Singer s Electric Columns; Mr. Walker's 

 Electrometer; Rochon's Apparatus for ascertaining the Heat of coloured 

 Rays. 



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

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

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

 possibility of Steam -escaping past the side of the Pisto"n is effectually pre- 

 vented. — A Plate to illustrate some Electrical Experiments by M.DeNe lis. 

 of Malines; with an Extension of them.br Mr. Singer and Mr. Crossb. 

 — A Plate to illustrate the Electrical TSxperirnehtS of M. De Nelis of 

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

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

 illustrative of Dr. Brewster's Paper on Light. — A ko Plate to illus- 

 trate Sir II. Davy's Paper on die Fire-damp of Coal-Mines, and on Me- 

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

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



Vol. XLVI I. Illustrated with a Quarto Plate describing the Plan*- 



PIIFRE Of DENUERA. 



