ENGRAVINGS. 



Vol. XXIX. is embellished with a Portrait of the late Dr. Darw'i.v ; 

 from an original Picture in the Possession of Ur. Thounton-t-A New Mi- 

 crometer, invented by ^'r. Brewster — A Representation of the Comet 

 now visible. — ^^Ir. Field's Plan fur Building Towns and Villages conr.- 

 posed of Ciicular Buildings — iVIr. Pepys's New Eudiometer — A Quarto 

 I'late of the Appaiaius employed by Mesirs. Allen and Pti-Ysin thiir Ex- 

 periments on Carbonic Acid— A fourth Plate to illustrate 1\J. Cuvier's 

 Paper on Elephants — Lieut. Col. Ck.-chion's Bsd lor the easy Conveyance 

 of Sick and Wounded Soldiers: engraved by Pokier — And Capt. Pas- 

 Ley's Improved Tclegiajih : engravtd by Porter. 



Vol. XXX. Sir H. C. Englei'illd's Mountain Barometer, engraved by 

 .LrwuY-T— A Plate to illustraie M. Cuvjer's Paper on Elephants — Another 

 Plate on ihesame Subject. — i and 2. 'J'vio Plates to illustrate M. Cuvier's 

 Paper on Elephanrs, engraved by Porteji. — 3. Figures to illustrate Air. 

 PItRSCHF.LS Paper on Cokiuied Kings. — A Skeleton of the American 

 Mammoth, engraved by Pprter, — A Pprtrait of M, Cabsot — The Oil- 

 mill of Bangalore. 



Vol. XXXI. Mr. Davy's ne\y Ertiiometer. — Geological Sections of 

 S;r:ita, in jVi.itlock, Derbyshire, by Mr. Whitehurst and Mr. I'Akey. — 

 Illustration of the Chinese Method of pMpagating Fruit Trees by Abso's- 

 fion — And Mr. Biujad's Gauge for tmasun'ng Timber. — illastiaiior of 

 Mrs. D'Oyley's Method of breeding Poultry ; Mr. Druw's Balance livej 

 for l.iying-out Land for Iirigaticn ; and an Experiment in Optics. — M. E. 

 TurihELL's Construction of Chemical 3fufllts. — Mr. Gsl^'In's Ma-hinc 

 for raising' Coald and Ores. — Wilson's Secure Boat, or Life Poat and 

 BfSWEiL's improved Capstan : engraved by PoRTEn — I^epys's .-ip^iratus 

 for Deconnposing the Alkalis under Naphtha- engraved by Low;y. — 

 Atkiks's improved Plydrometer for weighing Sc^ds and Fluid.*. 



Vol. XX>;iI. Mr. Cleall's Machine for thnshing Hemp; an( Mr. 

 Bond's Machine for breaking Hemp.?— Mr, W^ic's Compensatiot Pen- 

 dulum. — Mr. Groombridge's Diagram of the Moton oflhe Planet '''esta, 

 — A '* trait of Sir H. G. IiNGLtriELw. — Mr. Charles Le C/am'? 

 Tram-Pates — and Mr. Collier's Ship Stove. — A}){niatiis employed by 

 MeiSis. Allen nnd Pepys in their Experiments on Respiration. — iVIr. 

 >l£\'KY*s Apparatus for Decomposing Compound lnh\mmrtblc Ga.ses. — 

 Apparatus emn'oytd in the Royal Institution for the Decomyo.«ition of 

 Potash by Ircsn.— B2ll's Method of saving Shipwrei ked Marineis. 



Vol. XXXIII. Mr. Jamis Elmes's Portable Dridgc. — Mi. Rvicht's 

 new Method of training Fruit Trees. — Mr. litRscHSL's Figures ot the 

 Comet of 1807 — Two Plates to illust:ate Dr. William Richardson's 

 Paper on the Basaltic Surface of the Counties of Dcrry and Antiim : viz. 

 A View of PoKTMOON. — A View of Plks-kin, on the N. \V. Side ol Ben- 

 gore Promontory. — Mr. Clhcc/s Apparatus for making Carbonated Hydro- 

 gen Gas fri;m Pit-Coal. — Mr. Richards,')n's Machine for raising large 

 Stones out of the Eaith ; — and Mr. Gough's new Hygrometer. — Pilton's 

 J.igbt Fence for Inctosurcs, which becomes invisible at a short Distance. — 

 Proposed Ia:provcmcing in Telescopes, by M. Klmckhardt and by Dr. 

 BuEWsrtR ; and M. Bol'llay's Apparatus for Pho.-iphoric Ether. — Major 

 Le Hardy's Telegraph.^Capt. Bolton's improved Jury Mastj and Capt, 

 Bails Method of Fishing iVnchcrs. — Plan and Section of the 'I hames 

 Archway. — Plan of Sionyhur.st Seientilic Establishment. — Mr. Tad's Me- 

 thod of causing aDoor tj open over a C^irpcCj— and Mr. Barlow's Wrencl^ 

 Jor ii-cjcw Nuts of any Size. 



