ENGRAVINGS. 



Vol. XXVII. is illustrated with a Quarto Plate of Mr. Stfevens's Com? 



pound Gasometer Mr. Maseres's Fire- Escape Mr. Walker's new 



Optical Instrument called the - \ascoftf — Mr. Snodcrass's Method 



pt Heating Buildings and Apartments by Means of Steam — Mr. Trotter's 

 Machinery for Curvilinear Sawing, and Mr. Hardie's Improve'! Book** 

 lender's Cutting Press — Mr. George Field' 4 ^r Heating Rooms, 



and i ;;, ing various Articles — figures, illustrating the Manner of using Mr. 

 Walker's Transit Instrument — Dr. Wollastqn's Camera Lucida for 

 drawing from Nature in Perspective. 



Vol. XXVIII. is illustrated with Mr Kater's H — R tMsOEw'* 



Optigraph improved by Mr. Jones-— Figures to illustrate Mr. Evans's 

 Paper on Goniometry — Apparatus employed by Mr. Davy in his new Gal? 

 vanic Experiments — -Dfscroizilles' Alkali-meter j and Figures to illus- 

 trate C. A. Prieur's Experiments on the Decomposition of Light — A 

 Qaiarto Tlate. containing a Skeleton of the Indian Elephant— An Octavo 

 Plate on the same Subject — A Quarto Plate of Tables relating to Musical 

 Temperature, by Mr. Farey — Anatomical Figures relating to the Elephant. 

 Vol. XXIX. is embellished with a Portrait of the late Dr. L'arwjn; 

 from an original Picture in the Possession, of Dr. Thornton — A New Mi- 

 crometer, invented by Mr. Brewster — A Representation of the Comet 

 now visible. — Mr. Field's Plan fir Building Towns and Villages com- 

 posed of Circular Buildings — Mr. Pefys's New Eudiometer — A Quarto 

 f'late of the Apparatus employed by Mess; Allen and Pei-ys in their Ex- 

 periments on Carbonic Acid — A fourth Plate to illustrate M, Cuvier/S 

 Paper on Elephants — Lieut. Ccl. Crichton's Bed tor the easy Conveyance 

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

 lt.y's Improved Telegraph: engraved by PoRtRr. 



Vol. XXX. Sir H. C. Engleiteld's Mountain barometer, engraved by 

 Lgwry — A Plate to illustrate M. Cuvier's Paper on Elephants — Another 

 Plate on the same Subject. — I and 2. Two Plates to illustrate M. CuVisr's 

 Paper on Elephants* engraved by Porter. — 3. Figures to illustrate Mr. 

 Herschel's Paper on Coloured Rings. — \ Skeleton of the American 

 Mammoth, engraved by Porter. — A Portrait of M. Carrot — The Oil- 

 mill of Bangalore. 



Vol. XXXI. Mr. Davy's new Eudiometer. — Geological Sections of 

 Strata, in Matlock, Derbyshire, by Mr. Whitehurst and Mr. Farey.— 

 Illustration of the Chinese Method of propagating Fruit Trees by Abscis- 

 sion — And Mr. RbQad's Gauge for measuring Timber, — illustration of 

 Mrs. D'OyleY's Method of breeding Poultry ; Mr. DftEW'l Balance Level 

 for laying-out Land for Irrigation} and an Experiment in Optics.— M'. £. 

 Turkell's Construction of Chemical Muffles.— Mr, Gilpin's Machine 

 for raising Coals and Ores. — Wilson's Secure Boat, or Life Boat ; and 

 Boswell's improved Capstan : engraved by Porter. — Pepys's Apparatus 

 for Decomposing the Alkalis under Naphtha: engraved by Ljwry. — 

 Atkins's improved Hydrometer for weighing bolids and Fluids. 



Vol. XXXII. Mr. CleaLI/s Machine for thrashing Hemp; and Mr. 

 Bond's Machine for breaking Hemp. — Mr. Ward'* Compensation Pen- 

 dulum. — Mr. GkoombriDge's Diagram of the Motion of the: Planet 

 — A Portrait of Sir H. C. Enc-lifield. — Mr. Charles Le Caah's 

 Tram-Piates — and Mr. Collier's Ship Stove.^- Apparatus employed by 

 Messrs. Allen and Pepys in their Experiments on Respiration. — Mr. 

 Henry's Apparatus for Decomposing Compound inflammable Gases. — 

 Apparatus employed in the Royal Institution for the Decomposition of 

 Potash by lion. — Bell's Method of s***-^ Shipwrecked Mariners. 



