ENGRAVIlsr(5S. 



Improvement on the Sliding-Rule. — A Plate descriptive of Mr.EMMETT's 

 Instrument for the Measurement of the Moon's Distance from the Sun, 

 &c. ; aUo a New Reflecting Goniometer. — A Plate to illustrate Chevalier 

 Baader's Method of communicating Rotatory Motion ; Lieut. Shuld- 

 ham's improved Method of working a Capstan ; and Steele's new Mo- 

 dification of Nooth's Apparatus, Sec. 



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



on Flame, and Sir George Cay ley's Paper on Aerial Navigation. 



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

 pound Blo,w-pipe of Mr. Hare ; and. a Sketch of a Steam-Vessel in- 

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

 for Subhmation 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. Adamson. — A Plate illiistrative of Mrs. 

 Ibbetsos'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- 

 '•peronthe Anatomy of Vegetables; and Mr.TREDGOLo's on Revetements. 



Vol. LII. 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 Fruclifica- 

 "tion of Plants. — A Plate illustrative of the Rev. John Mich ell's Theory 

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

 Article on the Pendulum ; and New Apparatus for impregnating Liquids 

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

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

 poisonous Fangs of Serpents. 



Vol. LIIL A Plate illustrative of Dr. Ure's Experiments en 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 the .Marquis Ridolphi's Improvement on the Gas Blow-pipe. A 



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

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

 taining Distances. — A Plate illustrative of Dr.OLiNTHus Gregory's 

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

 Island ofBalta, 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 



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



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

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

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

 riation cf the Magnetic Needle as observed on Ship- board. 



Vol. LV. A Plate exhibiting Sketch of the Comet's P.uli of .July 1819. 

 — A Plate illustrative of the Annular Eclipse of tJic 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 tlie 

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

 Li^ht which hitlierto has been unobserved by Philosophers. — A Plate de- 

 scriptive of Mr. Cuthdert's improved Hydro.pneumatic Apparatus, &c. 



