ENGRAVINGS. 



Vol. L. A Plate to illustrate Sir Humphry Davy's new Researches 

 on Flame, and Sir George Cayi.ey's Paper on Aerial Navigation.-~- 

 A Plate representing a Section of the Pneumatic Cistern, with the com- 

 pound Blow-pipe of Mr. Hare ; and a Sketch of a Steam-Vessel in- 

 tended to run between London and Exeter.-— Representation of Apparatus 

 for Sublimation of Iodine— Model of a Safety Furnace by Mr. Bakewell 

 — Apparatus for consuming Fire-damp in the Mine — and Apparatus for 

 re-lighting the Miners' Davy, — A Plate illustrative of the New Patent 

 Horizontal Water- Wheel of Mr. Adam son. — A Plate illustrative of Mrs. 

 Ibbetson's Theory of the Physiology of Vegetables. — A Plate to illus- 

 trate Mr. Dickinson's new System of Beaconing. 



Vol. LI. A Plate illustrative of Mr. Capel Lofft's Paper on tlie 



Probability of Meteorolites being projected from the Moon Two 



Plates : one, of Mr. H. Tritton's Improved Apparatus for Distillation ; 

 and another, of the Figures in Bradley's Gardening illustrative of the Ar- 

 ticle on the Kaleidoscope. — A Plate illustrative of Mrs. Ibbetson's Pa- 

 per Qn the Anatomy of Vegetables; and Mi^Tredgold's on Revetements, 



Vol. LIT. A Plate illustrative of Mr. Upington's Electrical In- 

 creaser for the unerring Manifestation of small Portions of the Electric 

 Fluid. — A Plate illustrative of Mrs. Ibbetson's Paper on the Frucliffca- 

 tion of Plants. — A Plate illustrative of the Rev. John Michell's Theory 

 of the Formation of the Earth. — A Plate ilhistrative of Capt. Kater's 

 Article on the Pendulum ; and New Apparatus for irapregnating Liquids 

 with Gases. — A Plate illustrative of Sir H. Davy's Apparatus for Volar 

 tilization of Phosphorus, and Mr, Smith's Essay on the Structure of the 

 poisonous Fangs of Serpents. 



Vol. LIII. A Plate illustrative of Dr. Ure's Experiments on Caloric, 

 Mr. Luckcock's Paper on the Atomic Philosophy, and Mr. Bolton's 

 on the Purification of Coal Gas. — A Plate representing* Mr. Rennie's 

 Apparatus employed in his Experiments on the Strength of Materials; 

 and tlie Marquis RiDOLPHi's Improvement on the Gas Blow-pipe. — A 

 Plate illustrative of Mr, Meikle's Paper on Calorific Radiation; Mr. 

 Lowe's on the Purification of Coal Gas; and Mr. Hughes's on ascer- 

 taining Distances, ■ — A Plate illustrative of Dr. GlintHus Gregory's 

 Paper on the different Rates of Pennington's Astronomical Clock at the 

 Island of Balta, and at Woolwich Common, 



Vol. LIV. A Plate illustrative of the Menai Bridge, — A Plate illus- 

 trative of Mr. Lowe's Description of a Mercurial Pendulum. — A Plate 

 JUustrative of Mr. Hare's Calorimotor, a new Galvanic Instrument. — A 

 Plate illustrative of Captain Sabine's Paper on Irregularities observed in 

 the Direction of the Compass Needles of the Isabella and Alexander in 

 the late Voyage of Discovery ; and Mr. Scoresby's Anomaly in the Va- 

 riation of the Magnetic Needle avot)served on Ship-board. 



Vol. LV. A Plate exhibiting Sketch of ihe Comet's Path of July 1819. 

 — A Plate illustrative of the .*\.nnular Eclipse of the Sun on the 7th of 

 September next. — A Plate illustrative of Mr. Lane's Instrument for 

 gathering Fruit; Mr. Young's Mode of preparing Opium from the 

 Papaver somniftrum; and of Captain For man's Essay on a Property in 

 Light which hitherto has been unobserved by Philosophers. — A Plate' de- 

 scriptive of Mr. Cuthbi'.rt's improved Hydro^pneumatic Apparatus, &e. 

 — A Plate illustrative of Capt, Forman's Essay on the Reflection, Refrac- 

 tion, and Inflection of Light, &c, ; and Mr. Char'es Bonnycastli 's 

 Communication respecting the Influence of Masses of iron on the Mari- 

 ner's Compass. V 



Vol, LVI. A Plate illustrative of Mrs. Ibbetson's Paper on the Phy. 

 .iology of Botany. 



