engravings; 



Vol. XLI. Pkpys's Mercurial Voltaic Conductor. — Lcslii's Dif- 

 lential Thernaometert Diagrams to illustrate Dr. Wollaston's Peri- 

 opir Camera Obscura and Microscope. — Count Rum ford's improved 

 6ffe«-pots.— Mr. Goss's Instrument to work Addition of Numbers 

 ith Accuracy and Dispatch .-^Mr. Davis's hanging Scaffold;, and 

 lV. Map.tin'b Method of relieving a Horse from a Cart when fillen 

 jwn in its Shafts. — A Quarto Plate to iUustrate Mr. J. Hicks's Ac- 

 mnt of the Situation and Means of raising the Royal George, — A Plate 

 illustrate Mr. Southern's Essay On the Equilibrium of a Combination 

 Beams, Blocks, &c. and on the Polygon of Forces. — A Plate to illustrate 

 Ir, SrstvENs's Account of a Meteor seen at London and other Places iii 

 larch last. — A Plate to illustrate Mr. Machell's Annular Saw. 



Vol. XLIl. A Plate containing Prcfessor Lrslib's Atmomcter, and 



igures to illustrate Dr. Woluastom s Paper on the elementary Particles 



f certain Crystals.— -A Sketch of that Part of the Island of Java which 



'. ontatns the natural Lake of Sulphuric Acid.-'— Interior of Volcano in. tiie 



•land of Java, and Figures to illustrate Mr. Walkkr'8 Paper on the Else- 



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



. 'lants, and Dr. Wollastok's Crj'ophoru* — A third Plate to illustrate 



■. ». ^ «nk's Memoir .on the i^natomy of Plants. — Mr. T. Jokes's Secto- 



}, p-aph, — a new Instrument for dividing right Lines into equal Part*, mcaaur- 



"j ng Angles, and inscribing Polygons in the Circle,- &c. 



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



i?>y Sir H. C. Englefif.ld, Bart. — A Plate to illustrate the U'* of Air- 



., i^essels in Pfants, By Mrs, Ibbetsom. — A Plate to illustrate M. Se- 



; HEKTiN.i's new Apparatus for producing Oxygen Gas to restore sus- 



; Ipended Animation — Mr. Reade's Paper on tJie Refraction of the Solar 



,iRays — and Mr. Hargreavi-s's Observations on Colours. — A Plate to 



jfellubtrate Mr. J, Whitford^s mechanical Substitute for Leeches; and Mr. 



'jj. Tilley's Hydro-pneumatic Blow-pipe. •— A Plate to describe Mr. 



R. Hughes's Gudgeon for the Shaft of a Wat8.'--wliecl ; and Mr, Pad- 



hurv's Guard for a Carriage-wheel. — A Pl-jj? to describe Captain Peat's 



Temporary Ship's Ri^dder. — A Quarto Plate of Mi'. Samuel Joxks's 



Sofa Bed. 



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

 pipe ; a Proposal for an Improvement of the Galv;inlc Trough ; and a 

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

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

 -Apparatus to illustrate Mr. Brakde's Paper on some new Electrical 

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

 Cuticle cf Leaves, — Bkunton^s Patent Chain Cable, — Figure."; relative to 

 Dr. Brewster's Paper on the Affbctions nf Light transmitted through 

 crystallized Bodies. — A Plate to illustrate Dr. Brewster's Paper given 

 in our last Number. 



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

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

 ©akewell's Sketch of tlie Arrangement of the Rocks and Strata in the 

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

 Buchanan's Descripllbn of the Steam-Boats on the Clyde; and Mrs, 

 Isbetson's Paper proving that the Embryos of tlie Seeds are formed irt 

 the Root alone — A Plate to illustrate M...Tohn Walters's Improve- 



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



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

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

 Kays. 



