ENGRAVINGS. 



Vol. XLIl. A riat« containing Professor Lrs'.ie's Atmomeler, aiui 

 Figures to illustrate Dr. Wollastom's Pap'er on tlic elementary Particles 

 of certain Crystals. — A Sketch of that Part of the Islaiid of Java which 

 conj:a'uis the natural Lake of Sulph-.jric Acid. — Interior of Volcano in the 

 leiaiid ot Java, and Figures to ilhv^tra'.e Mr. Walke^.'s Paper on the Elec- 

 ttic Fluid.— A Pbre to i'.lust-rate iM. Link's Memoir on the Ar.afomy of 

 Plante. and Dr. VVollaston's Crvophorus.— A Uiird Plate to illustrate 

 -M. Link's Memoir on the Anntr.my of plants.^ — hlr. T.Jones's Secto- 

 jraph, — a nsw Listrument for dividing right Lin^s into equal Parts, measur- 

 ing Angles, a!id inscribing Polygons in tiis Circle, &c. 



Vol. XLIIL A Plate to illustrate » New Transit Instrument invented 

 by Sir H. C. Englefield, Bart, — A Plate to illustrate the Use "of Air- 

 Vessels in PUuUs., i3y Mri. Ibbetson.*— A Plate to illusitrate M. Se- 

 MENTiNi's new Apparatus i-ov producing Gxygcn Gas tc restore sus- 

 pended AninL'ttioi. — Mr. Reaus's Paper on the Refraction of the Solar 

 Ilr.ys — and Mr. Hargreaves's Obserratious on Colours. — -A Plate to 

 ■ illustrate Mr. J. \Vi:!tfop>d's inech.anicai Substitute for Leeches; and Mr, 

 .1. Tilley's Hy<iro-pneuuTiiu;c Blow-pipe. — ^A Plate to describe Mr, 

 "p. Hughes's Gudgeon for the Slr'aft of a Water-wheel; and Mr. Pad- 

 bury's Guard for a Carriuge-wiiScL— A Plate to describe Captain Peat's 

 •'i'ttnipcriiiy Ship's Rudder. — A Quarto Plate of Mr, Samuel Jones's 

 tofa Bed. . 



Vol. XLIV, 4- Plate to ilkutrate Mr. Hume's Gazometer and Blow- 

 ^pe ; a Proposal for an Improve.rr>ent of the Galvanic Trough ; and a 



' {R\v Apparatus for preparing pure Muriatic Acid. — A practical Diagram 

 ffr obtaining the Lunar Distances observed hj a S^itant. — Electrical 

 /pparatus to illustrate Mr.~ Brani^h's Paper on some new Electrical 

 Pixncmena.— A Quarto Pla'je to illustrate Mrs. Ibbetson's Paper on the 

 Citicleof Leaves. — Brunton's Vatent (Zluiin Cable. — -Figures relative to 

 jy. Brewster's Paper on tlie AfFectiojts of Li^-ht transn'ji'i.ied through 

 ./staiiized Bodies.— A Plate to il)ustra:e^Dr. E.hewster's Paper given 



in our last'Number. 



Vol. XLV. A Plate to illustrate the Nourishment produced t3 ths 

 plant by its Leaves. j'>y Mr<;. IbbeToOn'. — A Pbfe to. iiiustrate Mr. 

 Bakewell's Sketch of the Arrangenient of llie-'Roclcs and Strata in the 

 Northern Couniies of Engla.nd.-^Piatcs to illustrate Mr. Robertson 

 Buchanan's Description of the Skt;am-Bo:;rts on tiie Clyde; and Mrs. 

 I bbetson's Paper proving that the Embi^os of th<; Seeds are foirned in 

 the Root alone — A Pirfte to iilustr.ite Mr, John Walters's Improve- 

 ments in Naval Architecture. — A Quarto Pltte on the Roots of Plants. — 

 An Octavo Plate of Mr. Simger's Electric Columas; Mr. Walker's 

 Electrometer; Rochon's Apparatus for ascertaining the Pleat of coloured- 

 Rays. 



Vol. XLVI. I.'Ir.T. .ToNEs's New Rcfl?cting Compass. — Mr. V/oolf's 

 Patent Boilsr for Steam Engines and other Purposes. — A Plaie to illus- 

 trate Mr. WooLF's-Iniprovernent on the Steam-Engine, by which the 

 possibility of Srcam escaping past the side of tlie Piston is efFxtually pre- 

 irented.— A Plate to illustrate some Electrical Expcrifticnts by M. Du N£l>9 

 of Maiinesj with au Extcn&ioaof them by Mr. SiJiGsa an^Mr. Crosse. 



