ENGRAVINGS. ~ ave 
Vo). XXKIIL. Mr. James Exmes’s Portable Bridge—Mr. KniGur’s 
‘new Method of training Fruit Trees— Mr. Herscuet’s Figures of the 
Comet of 1807.-——Two Plates to illustrate Dr. Wittiam: Ricwarpson’s - 
Paper on the Basaltic Surface of the Counties of Derry and Antrim = viz. 
A View of P oxtmoon, —A View of Peskin, on the N. W. Sideof Ben- 
gore Promoentory.— Mr. Ciece’s Apparatus for making Carbonated Hydro- 
gen Gas rom Pit-Cowii—Mr. Ricuarpson’s Machine for raising large 
Stones out of the Earth ;—and Mr. Goveu’s new Hygrometer.—Pitron’s 
Light Fence for Inclosures, which becomes invisible at a short Distance,— 
Proposed Improvements in Telescopes, by M. BurcKkuarvrand by Dr, 
Brewster; and M. BoutLay’s Apparatus for Phosphoric Ether.—Major 
Le Harpy’s Telegraph.—Capt. Botron’s improved Jury Mast; and Capt. 
Baxuv’s Method of Fishing Anchors.—Plan and Section of the Thames 
‘Archway.—Plan of Stonyhurst Scientific Establishment.—Mr. Tap’s Me- 
thed of causing a Door to open over a Carpet ;—and Mr. Bartow’s Wrench 
for Screw Nuts of any Size. 
Vol. XXXIV. ‘Two Plates to illustrate. M. Hauy’s Crystallography.— 
Apparatus to illustrate Mr. Davy’s Bakerian Lecture——A Quarto and an 
Octavo Plate descriptive of Mr, Troucuron’s new Dividing Instrument.— 
A Plate to illustrate Mr. VarLey’s Paper on Thunder Storms.—Another 
Plate to illustrate Hauy’s Uheory of Crystallization.—A Quarto Plate to 
illustrate Mr. Kirwan’s new Anemometer; engraved by Porter.—An 
Octavo Plate to illustrate M. Havy’s Crystallography; engraved by Lowry. 
—A Plate to illustrate Messrs. ALLEN and Peprys’s new Experiments on 
Respiration, Exgraved by Porrer.—A Plate to illustrate M. Havy’s 
Crystallography.—A_ Plate illustrating the Construction of Mr. Crece’s 
Rotative Steam Engine.— Another Plate on the same Subject.—A Plate of 
Crystals to illustrate M. Havuy’s System. 
Vol. XXXV. A Head of M. Hauy, engraved by T. Wootnotn from 
an original Drawing by I’. Massarp.—A Plate illustrating M. Havy’s 
Crystaliography.—Dr. Woxttaston’s Goniometer: Dr. Heary’s New 
Cupping Instrument: and a Diagram to illustrate Mr. Warxer’s Theory 
of Vision.—A Plate to illustrate Hauy’s Crystallography.—Mr. Caven- 
pisu’s dividing Instrament.--New Electrical Apparatus.—A Plate to illus- 
trate MM. Hauy’s System of Crystallography.—Mr. Accum’s Hydro-pneu- 
matic Table—A Piate to illustrate Vi. Hauy’s Crystallography.—Captain 
Pasvey’s ‘Velegraph, and Mr. Jouns’s Apparatus for Decomposing Potash 
and Soda.—Diagrams to illustrate M. Monee’s Paper on the Composition 
and Decomposition of Forces.—A Plate to illustrate Havy's Crystallo- 
graphy.—Two Pilates of Apparatus employed by Mr. Davy in the Elect 
chemical Experiments detailed in his Bakerian Lecture. 
Vol. XXXVI. Design for a Cast-Iron Tunnel to cross the Thames, 
by Col. Lennon —T'wo Plates to illustrate Hauy’s Crystallography—A 
Head of Buchanan, from an original Portrait by Titian: engraved b 
Woo tnoru,—A Plaie to illustrate the Paper on Musical Intervals.— 
Plate to illustrate Mr. Sarmon’s Paper on Building in Pisé, and his Ma- | 
chine for securing Depredators without injuring them.—A Plate to illustrate — 
a, Memoir by M. Massenrratz on the Alterations which the Light of 
the Sun undergoes in passing through the Atmosphere,—Mr. SrENCER’S 5 — 
Camp Telegraph, —Section of Timahoe Bog in Ireland. —A Transverse | 
Section of Lullyn.ore Bog,—part of the Great Bog of Allen.—Berthollet’s 
Manometer. 5 lite Lay 
Vol. XXXVII. Plates 1 and 2, Representations of Luminous Animals, to 
illustrate Mr.Macartney’s Paper on that Subject.—Quarto Plate of the Orbits 
of the newly discovered Planets, —A Quarto Plate to illustrate M.PeyRrarp’s 
fax y! 
| 
Paper on Burning Mirrors.—A Plate to illustrate Mr. Donovan's Paper 
