ENGRAVINGS. 

 Vol- XXXVII. Plates I and 2, Representations of Luminous Animals, to 

 illustrate Mr.Macartney's Paper on that Subject.— Quarto PI ite of the Orbits 

 of the newly discovered Planets. — A Quarto Plate to illustrate M. Pa yr.ard's 

 Paper on Burniing Mirrors. — A P!a e to illustrate Mr. Donovan's Paper 

 on Electro-rheniical Agency — Mr. Accum's NewMineralogical Apparatus. 

 —Mr. Lee's Thrashing Machine. — Mr. Cook's Apparatus for making Gas 

 and other Products from Pit-Coal; snd Mr. Way's Method of procuring 

 Turpentine from Fir Trees. — A Plate to illustrate Dr. Buewstsu's Paper 

 on the Power of the L^ver. 



Vol.XXXVIlL Mr. Do NK I n's Tachometer. — Mr. Allan's Mathematical 

 Dividing Engine. — A 4(0 Plate of Mr. Lokschman s Pa'.ent Piano- B'orte, 

 and Mr. Liston's Patent Enharmonic Organ. — A Plate to illustrate Mr. 

 Kauy's Paper on the Electricity of MineraN — Mr. Walkvr's improved 

 Micrometer. — Mr. Moult's Fiheing .Apparatus. — Mr.SMnH s iV'ethod of 

 relieving a Horse fallen in the Shafts ot a loidedCart. — Mr. Joiin Taylor's 

 Air-Exhauster for Mines. — A Repr.S(.ntation of the Comet now visible lu 

 Ursa Major. — Viir How \kd Louglas's Patent Reflecting Semicircle. — 

 A coloured Mjp to illustrati; Dr. Campbell's Fz\ er on tlie inferior Strata 

 of the Earth occurniig in L.mcashire. — Mr. S.idles s Apparatus for 

 i>melting of Lead. — A Plate to ill-isrratc Mr. William Smith's and Mr. 

 Edward Martin's Reports on t'le ctate of the Collieries at and near Nail- 

 sea, in Sonitrseishire. — Mr. Sadler's Appariiiusfor '^meiting of Lead. — • 

 A Plate to illustrate the difie.-tfnt Theoiies ( f Arches or Vaults, and of Domes. 



Vol.XXXlX. Mp.STr.hVENs's Nev; Leveliing-'Siaff.— A Map illustrating 

 the Great Derbyshire Denudation. — A Quarto Plaie to illu rate the Opti- 

 cal instrument called be Diacatoiitron. — \ Plate of Mr. Steevens's 

 Contrivance for freeing Wrjter-j)i;;es from Air: engraved by iVlr. i^)RTE?.. — 

 Mr. Allan's improved RctJecting Circle, — Mr. Wood's incKised (Tfind- 

 flone tor Pointi:.g Needles, a;.d Mr. Webster's iViethod of cirrying off 

 Steam from Boilers. — Mr. Brunton's i.nproved Pump for raising- Water 

 while Shafts or Pits are sinking. — Mr. Hodgson's improved Mariner's 

 Compass tor coriecting the iviagueric Variation-^:. — A Quarto coloured Plate 

 to illustrate the Cacology of 1 art of the Vicinity of Dublin. 



Vol. XI.. A Plate to illustrate the Fojndation of Mr. William JoNiS's 

 temporaiy Corn Kiik. -.Mr. ^TtPHCNs's iMethod of dividing Bricks.-— 

 Section of Mr. William Jones's tem])orary Cora Rick. — Mr. Waistell's 

 Impsovennnt on the Acorn Dibble. — A Plate to illustrate Mr. Tawney's 

 New Thrashing Mathi.e. — Two Octavo Plates Jescnptive of a New P/Ia- 

 chine for Pumping Water. — Two 1 laics deKiiptive of the Muscular Mo- 

 tion of Snakes. — Figures to illu-,trati; r-uch Poitions of a Spiicre as have 

 thtir Attraction expres.sed by. an algehjic Quantity — Van Helmont's 

 Diflcrenti^lTherniomeier. — Formation of OvaU for Gaideners, — Cn.ivA.siE's 

 Marine Tran-sit. — A Plate to illu-.triiLe Mr. Ijrodie's Experiments on 

 the Influence of the Brain on the Generation of Animal Heat. 



Vol. XLL Pepys's Moicuiiil Volt;iic Condi'.ctor. — Leslie's Dif- 

 feiential i hermometer. Diagrams to illustrate Dr. Wollaston's peri- 

 scopic Cameru Obsciira wnd Microscope. — Count Rumforo's improved 

 CoiFee-pots. — Mr. Goss's Ifistrunient to work Addition of Numbers 

 with Accuracy and Dispatch.— Mr. Dav.is's hanging Scaffold; and 

 Mr. Martin's Method of relieving a Piorse from a Cart when fallen 

 down in i:s Shafts. — A Quarto Plate to illustrate ^!;•. J. HiCKi's Ac- 

 count of the Situation and Means of raising the Royal George. — A Plate 

 to illustrate Mr. Southern's Essay on the Equilibrium of a Combin^iion 

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

 Mr. Steevens's Account of a Meteor icen at Loudon and other Places Ln 

 March last. 



