• ENCaiAVlNGS. 



Vol XXXVII. Plates i and 2, Kepreserttationsj i>£Lunu,r»,L 



niustrate Mr. Macartney's Paper on thatSubjech-^ .^yantoPiS^ I 



of ths nswly discovered Planets. — A Quarto ^hii''MAo.',llusUotcl: t. 



Paper on Burning Mirrors,— -A Plate to illustrji /e Mr.lioaG f 



on Eiectro-chemical Age-.icy —Mr. Accum's Nev^/ Minenh^'tc- 1 



~Mr. Lee's Tl.rashi.ng Machine.— Mr. Cook's i.^ppara(us1i)r I 



and olher Products frt)m Pit-Coal ; and Mr. Way's ft/e(nod r 



Tuf{)en'ine from Fir-Trees, -r-A Plate to illustrsa^ Dr. Eu&ws' | 



on the Power of the Lever. ■ { ' 1 



Vol. XXXVIIl. Mr.DoNKiN'sTachon\eter, — mT.Aitkv's^. t 



Dividing Eagine.— -A 4to Plate of Mr. LoI•scH^/A^''s Patent !( 



and Mr. Listok's Patent E;;barmonic Organ. -^A Plate to 111^ 



Haoy's Paper on the Elecrricity of MincraCs.— Mr. Walker jj 



Micrometer. — Mr. Moult's Filtering Apparatus. — Mr.SuiTii' k 



relieving a Plor.se fallen in the Shafts of a loaded Cart.— Mr. JoH^ I 



Air-Exhauster for Mines. — A Pvepresentafion of the Cornet iio\ip 



Ursa Major.— Sir How AKn .Douglas's Patent Reflecting Ssii 



A coloured M.^p to illustrate Dr. Campbell's Paper on the iniin 



of the Earth occurring in Lancarhire. — Mr. Sad;,er's Ap »I 



Smelting of Lead. — A Plate to illustrate Mr. William Smith b 



Edwajji) "Martin's Reports on the State of the Collieries at awe; 



sea, in Somersetshire,— Mr. Sadler's Apj/aratus for Smelting 1 



A Plate to illustrate the different Theories of Arches or Vaults, arte K. 



Vol.XXXlX. Mr.STEEVKMs's New Levelling-Staff". — A Map js 



the Great Derbyshire Denudation. — A Quarto Plate to illusirat it 



cal Instrument called the Diacatoptron. — A Plate of Mr, fr 



Contrivance.4br freeing Water-pipes from Air: engraved by Mr. %'. 



Mr. Allan's im.proved Reflecting Circle. — Mr. V/ood's inclo 1;' 



stone for Pointing Needles, and Mr. WERSTtu's Method of (f' 



Steam from Boilers. — Mr.P,KUKTON's improved Pump for raif 



while Shafts or Pits are sinking. — Mr. Kodgson's irnprovec N 



Compass for correcting the Mag.ietic Variations. — A Quarto col d 



to illustrate the Geology of Part of the Vicinity of Dublin, .i 



Vol. XL. A Plate to illustrate the FoLindaiion of Mr. Willi (ji 



temporary Corn Rick.— Mr. STEiHr.Ns's Method of divjdinglri 



Section of Mr. William Jones's temporary Corn Rick. — Mr. \ns 



Improvement on the Acorn Dibble. — A plate to illustrate Mr', h 



Kew Thrashing/Machine,— Two Octiivo Plates descriptive of ;!e 



chine for Pimping Water. — Tvyo Klates descriptive of the Mi jli 



tion qf Snakes. — Figure? to illustrate such Portions of a Sph ;a 



their Attraction expressed by an algebraic Quantity. — Va« Jii 



DifferentialTheiTOometer. — Formationcf Ovals for Gardeners.— Cji- 



Marine Transit. — A Pbte to. illustrate Mr. B.-iodie's Expe t; 



the Influence of the Brain on the Generation of Anitnal Heal [ 



. Vol.'XLI. Pe?ys's Mercurial Voltaic Conductor.-:-LEs Fd 



fereiitial Thermometer. Diagrams fo illustrate Dr. Wollas i'i 



scop.ic Camera Obscura and Microscope. — Count Rum ford' j 



Coffre-pots — Mr. Goss's Instrument . to work Addition o 



with Accuracy and Dispatch.— Mr. Davis'^s bunging Sca 



. Mr. Martik's Method of relieving, a Korse from a Cart _v 



dovn in its Sh.ifts,— A Quarto Plate to illustrate Mr. J, t 



count of the Situation and Means of raising the Royal George 



to illustrate Mr. Southern's Essay on the Equilibrium of a C il 



of Beams, Blocks, &cc. and on the Polygon of Forces.-— A Plate 



V"^ Steevens's Account of a Meteor seen at London and otj: 



Mai-eh last.— A Pljiteto illustrate Mr. Machbijl's Annular S 



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