ENGRAVINGS, 
Vol. KXXKVII. Plates 1 and 2, Representations of Luminous Animals, te 
illustrate Mr-Macartney’s Paper on that Subject-—Quarto Plate of the Orbits 
of the newly discovered Planets.—A Quarto Plate to illustrate M.PeyRarp’s 
Paper on Burning Mirrors—A Plate to illustrate Mr. Donovan's Paper 
on Electro-chemical Agency. —Mr. Accum’s New Mineralogical Apparatus. 
—Mr. Lee’s Thrashing Machine—Mr.Coox’s Apparatus for making Gas 
and other Products from Pit-Coal; and Mr. Way’s Method of procuring 
Turpentine from Fir-Trees. —A Plate to illustrate Dr. Brawstex’s Paper 
on the Power of the Lever. 
Vol. XXXVILL. Mr. Donx1n'sTachometer.—Mr. AtLan’s Mathematicat 
Dividing Engine.—A 4to Piate of Mr. Lozescuman’s Patent Piano-Forte, 
‘and Mr. Liston’s Patent Euharmonic Organ.—A Plate to illustrate Mr. 
Havy’s Paper on the Electricity of Minerals—-Mr. Wa1xen's improved 
Micrometer,—Mr. Moutr’s Filtering A pparatus.—Mr.Smirx's Method of 
relieving a Horse fallen in the Shafts of a loaded Cart.—Mr. Jonn Taxton’a 
Air-Exhauster for Mines. —A Representation of the Comet now visible in 
Ursa Major.—Sir Howarp Dovetas’s Patent Reflecting Semicircle.— 
A coloured Map to illustrate Dr. Campzety’s Paper on the inferior Strata 
of the Earth occurring in Lancashire—Mr. Saprer’s Apparatus for 
Smelting of Lead.—A‘Plate to illustrate Mr. Wittiam Smiru’s and Mr. 
Epwarp Maztin’s Reports on the State of the Collieries at and near Nail- 
sea, in Somersetshire.—Mr. Sapier’s Apparatus for Smelting of Lead.— 
A Plate to illustrate the different Theories of Arches or Vaults,and of Domes, 
Vol. XX XIX. Mr. Sre:vens’s New Levelling-Staff.—A Map illustrating 
the Great Derbyshire Denudation.—A Quarto Plate to illustrate the Upti- 
cal Instrument called the Diacatoptron.—A Plate of Mr. Sreevens’s 
Contrivance for freeing Water-pipes from Air: engraved by Mr. PorTER.— 
Mr. Atcan’s improved Reflecting Circle—Mr. Woon’s inclosed Grind- 
stone for Pointing Needles, and Mr. Wenster’s Method of carrying oft 
Steam from Boilers—Mr. Bruxton’s improved Pump for raising Water 
_ while Shafts or Pits are sinking —Mr. Hopcson’s improved Mariner's 
Compass for correcting the Magnetic Variations —A Quarto coloured Plate 
to illustrate the Geology of Part of the Vicinity of Dublin. 
Vol. XL. A Plate to illustrate the Foundation of Mr. Witit1am Jonss's 
temporary Corn Rick,—Mr. Srernens’s Method of dividing Bricks.—- 
Section of Mr. WittiaM Jones's temporary Corn Rick.—Mr. WalsTzct's 
Improvemcnt on the Acorn Dibble.— A Plate to illustrate Mr. Tawney’s 
New Thrashing Machine. —Two Octavo Plates descriptive of a New Ma- 
chine for Pumping Water.—T wo Plates descriptive of the Muscular Mo- 
tion of Snakes —Figures to illustrate such Portions of a Sphere as have 
their Attraction expressed by an algebraic Quantity—Van Hetmont's 
Differential Thermometer.—Formation of Ovals for Gardeners. —CuHavassr's 
Marine Transit.—A Plate to illustrate Mr. Bropis’s Experiments om 
the Influence of the Brain on the Generation of Animal. Heat, : 
Vol. XLI. Pepys’s Mercurial Voltaic Conductor.—Lssuie’s Dif- : 
ferential Thermometer. Diagrams to illustrate Dr. Woutaston’s Peria 
scopic Camera Obscura and BierbeconeCount Rumrorp’s improved 
Cotfee-pots.—Mr. Goss’s Instrument to work Addition of Numbers 
with Accuracy and Dispatch.—Mr, Davis’s hanging Scaffold; and 
Mr. Martix's Method of relieving a Horse from a Cart when fallen 
down in its Shafts—~ A Quarto Plate to illustrate Mr. J. Hicxs’s Ac« 
eount of the Situation and Means of raising the Royal George-—A Plite 
to illustrate Mr, Sournexn’s Essay on the Equilibrium of a Combination 
of Beams, Blocks, &c. and on the Polygon of Forces.~-A Plate to illustrate 
Mr, Steevens’s Account of a Meteor seen at London and other Places ig 
March last.—A Pilate to illustrate Mr. Macuetv’s Annular Saw. 
Vol. XLII. A Plate containing Professor Lesxin's Atmometer, and 
Figures to illustrate Dr, Wonvaszon’s Paper on the ¢lementary Particles 
wf certain Crystals, 
