ENGRAVINGS. 



Vol, XXXIII. Mr. James Elmes's Portable Bridge. — Mr. Knight's 

 new Method of training Fruit Trees.— Mr. Kerschei/s Figures of the 

 Cornet of 1807 — Two Plates to Illustrate Dr. William Richardson's 

 Paper on the JBij.- '. ic Surface of the Coi.ntirs of Derrj' and Antrim : viz, 

 A View of PoRTM ON. — A View of Pleskiv, on the N. W. Side of Ben- 

 gore Promontory. — Mi. Clh-Gg's Apparatus fur making Carbonated Hydro- 

 gen Gas from Pit-Coal. — Mr. Richardson's Machine for raising large 

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

 Light Fcce for Inciosures, which becon.es invisible at a short Distance.-— 

 Proposed Iiij.rovemenls in Telescopes, by M, Burckhahi-t and by Dr. 

 Bkcwstek ; and M. Boullay's Apparatus for Phosphoric Ether. — Major 

 Lf Hard-'s Telegraph. — Capt, Roltom's improved Jury Mastj and Capt. 

 Bai l's iVjethud of Fishing .Vnchors. — Plan and Seciian of the Thames 

 Archway. — Plan of S:onyhurst Scicnlilk E.nablishmcnt. — Mr. Tad's Me- 

 thod of caiismg a Door to open over a Carpet ; — and Mr, Barlow's Wrench 

 for Hcicvf Kuts of any Size. 



Vol. XXX IV. Two riate? to illustrate M, Hauy's Crys'allography.— 

 Apnar. tus to illustrate Mr. Davy's Bikerian Lecture. — A Quarto and an 

 Oc av.i Plate dcbcripliveof Mr. Tkoughtox's new Dividing Instrument. — 

 A Piaie to il.u.^trate Mr. Varley's Paper on 7 hunder .-lorms — Another 

 PUte to iilustr.'e Hauy's Theory of Crystallization. — A Quarto P!ate-to 

 iiiu rateMr. Kiuwan's new Anemometerj engraved by Poktfr. — An 

 Ociaio /laie \n iilustidleM. Hauy's Cry.stallogiaphyj engraved by LowRy. 

 — A Plfte to illusirate y'tssrs. Allen and Pkpys's new ExperinK-nts^ on 

 Resp!r^tion. Ei;gruvvd by Porti R. — A Fiate to illustrate M. H,'. l'y's 

 C r>htail-graphy. — A 1 late illustrating the C on.-truction of N'r. Clfgg's 

 Rotative ."•te.im Engine. — Another i'late on the same Subject. — A Plate of 

 C.y.«tals to illustrate M. Hauy's Syste.n, 



Vol XXXV. A Head of M. Kauy, engr^vt 1 by T. Woolnoth from 

 an origm-'I ' rawiixr by V. M.-.ssard— A i'Uite illustrating M. Hal v's 

 Crystal- graphy. — Dr. Wollaston's Gonioriicler : Dr. Healy's New 

 Ciippi"g Instru 1 en; : dn<l ,. I) ir.m to illusuale Vlr. Walri;r's Theory 

 ofVfion. — A Pjatt to illustrate Hauy's Crystallography. — Mr. Cavkn- 

 Dish's dividing luElrumcni. --Kew j^i^ctriral Appatatus. — A Plate to ilUis- 

 trats iV], Hauy's System of Crystallography. — Mr. .^ccum's Hydro-pneu- 

 matic Table, — A Piate to il'u.-tiae M. Pjauy's Crystallography. — Captain 

 Pasley's Telegraph, and Mr. Johms s An'parrtus (or Decjtnpoiing Potash 

 and Soda. — Diagram ■; to illustra-e M. Monge's i''apvr on tbeCompn.vition 

 and D composition of Forces. — A Plate to illustrate Haov's Cryitalla- 

 granhy, — Two Pla'es of Apparatus einj.loycii by Mr. Davy in the Electro- 

 chemical Expe.iments detaded in his B.;kerian Lecture. 



Vol. XXXVI. Design for a Cast-iron Tunnel to cross the Thames, 

 by Col. Lennon — Two Plates to illu trate Hauy's Cryytalto'^raphy. — A 

 Head of liucHANAN, fiom an original Portrait by Titian: engraved by 

 AVooi.NOTH. — A Piate to illu trate the lapei on Mu',ic;il Intervals. — A 

 Plate to illustrate Mr. Salmon s Paper on Building in Fise, and his Ma- 

 chine for securing Dep.redators without ipjaiing them. — A Plate toillu-trate 

 a Memoir by M. PIassenFkatz on the Alterations which the Light of 

 the Sun undergoes in passing through the Atmosphere. — Mr, Spencer's 

 C imp Telegraph. — Section of Timr.hoe Bog in Ireland. — A Transverse 

 Section of Lully more Bog, — part of the Great Bog of Allen, — Berihollel's 

 Manometer. 



