ENGRAVINGS. 



Vol. XXXIV. Two Plates to iHustrate M. Hauy's Crys^ allograph v.-^ 

 Apparatus to illustrate Mr. Davy's Bakerian Lecture. — A Quarto and an 

 Octavo Plate descriptive of Mr. TjiouGHTON's'new Dividing Instrument. — 

 A Plate to illustrate Mr. Varley's Paper on Ihunder 8torms— Another 

 Plate to illustrate Hauy's Theory of Crystallization. — A Quarto Plate to 

 illustrate Mr. Kikwan's new Anemonieterj engraved by Pouter. — An 

 Octavo Plate to illustrate M. Hauy's Crystallography: engraved by Lowry. 

 — A Plate to illustrate Messrs. Allen and Pepys's new Experiments on 

 Respiration. Engraved by Portkr.-^A Plate to illustrate M. Hauy's 

 Crystallography. — A Plate illustrating the Conftruction of Mr. Clegg's 

 Rotative rfteam Engine. — Another Plate on the same Subject.— A Plate of 

 Crystals to illustrate M. Hauy's System, 



Vol. XXXV. A Head of M. Hauy, engraved by T, WoolVoth from 

 an original Draining by F. Massard. — A Plate illustrating M. Hauy's 

 Crystallography. — Dr. Wo^laston's Goniomewr: Dr. PIealy's New 

 Cupping Instrument: and a Diagram to illnstratc Mr. Walkitr's Theory 

 ftf Vision. — A Plate to illustrate Hauy's Crvbtallography. — Mr. Caven- 

 dish's dividing Instrument. — New Electrical Apparatus. — A Plate to Illus- 

 trate iVj. Hour's System of Crystallography. — Mr. Accum's Hj'dro-pneut 

 matic Table. — A Plate to illustrate M. Hauy's Crystallography.— Captain 

 Pasley's Telegraph, and Mr Johnss Apparatus for Decomposing Potash 

 and Soda. — Diagrams to illustrate M. Monge's Paper on the Composition 

 and Dv-comf)osition of Forces. — A Plate to illustrate Hauy's Crystallo- 

 graphy. — Two Plates of Apjiaratus em]5loyed by Mr. Davy in the Electro- 

 chemical Experiments detailed in his Biikerian Lecture. 



Vol. XXXVI. De ign for a Cast-Iron Tunnel to cro:.s the Thames, 

 by Cul. Lennon. — Two Plates to illutrate Hauy's Crystallograj)hy.' — A 

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

 WooLNOTH. — A Plate to illustrate the Paper on Musical Intervals. — A 

 j'late io illustrate \Mr. Salmons Papet on Building in Pi.<t:, and his Ma- 

 chine for securing Depredators without injuring theiii. — A t'late toillu trate 

 a Memoir by M. Hassenfkatz en rhc Aiicraiiuns which the Light of 

 the Stin ur.dergoes in passing through the .AtniospJiere. — Mr. Si'Encer's 

 Camp i'elegraph. — Section of Timahoe Bog in Ir-tland. — A Transverse 

 Secli(iriof Lullyniore Bog, — part of ihc Great Bog of Allc!?. — BerthoUet's 

 Manometer. 



Vol. XXXVII. Plates i and 2, Represent>ions of Luminous Animals, to 

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

 of the newly discovered Planets. — r'^ Quarto Plate to illustrate M.P^yuakd's 

 I'aper on Burning Mirrors. — A Plae to illutrdte Mr. Donovan's Paper 

 on Electro-chemical Agency. — Mr. Accum's New ]\hiieiatogical Apparatu". 

 — Mr. Lek's t'hiashiiig Machine. — Mr. Cook's Apparatus for tn^.kiug Gas 

 and other Products from Pit-Ccal ; and ]\Ir« Way's Method of procuring 

 'i'urpentine from Fir Trees. — A Plate to illustrate Dr. Bukwstek's Pajier 

 on the Power of the Lever, 



Vol. XXXVIII. Mr.DoNKtN'sTachomelcr. — Mr. Allan's M.ithemat'cal 

 Dividing Engine. — A 4I0 Plate of Mr. Loeschman's i'atent Piano-Foiie, 

 iiiid Mr. Liston's Patent Enharmonic Organ. — A Plate to illuatrate Mr. 

 Hauy's Paper on the Electricity of Minerals. — Mr. Walkvu's improved 

 Mlcromcrr. — Mr. Moult's llltc ing Apparatus. — Mr. Smith's iVlethud 

 c-f relieving a Horse fallen in the Shafts of a loaded Cart. — Mr. Taylor's 

 Air-Exhaustcr for Mines. — A Representation of the Comet now visible iji 

 Ursa Major, — Sir Howard DouGLAi's Patent RetUcting Semicircle. 



