ENGRAVINGS. 



'l^ \ Cil, LIII. A Plate illustrative of Dr. Ure's Experiments on Caloric, 

 JMi. Luckcock's Paper on the Atomic Philosophy, and Mr. BoLTON'r. 

 Lathe Purification of Coal Gas. — A Plate representing Mr. RENNir'<; 

 Apparatus employed in his Experiments on the Strength of Material;-; 

 and the Marquis Ridolphi's Improvement on tlie 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..On\THus Gregory';? 

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

 Island ofBalta, and at Woolwich Common. 



Vol. LIV. A Plate illustrative of the Memai Bridgf, — A Plate illus- 

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

 illustrative of Mr. Hare's Calorimotor, a new Galvapic 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 as observed on Ship-board. 



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



— A Plate illustrative of tlie Annular- Eclipse of the Sun on the 7th of 



' "■ ^tember next. — A Pl.ite illustrative of Mr. Lake's Inftrurr.ent for 



iiering Fruit; Mr. Young's Mode of preparing Opinm from the 



[papaver iommfnTum; and of Captain Forman's Essay on a Property in 



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



■ptiveof Mr. Cuthbert's improved Hydrb-pjieumatlc Apparatus, &c. 



- V Plate illustrative ofCapt. Format's Essay on the Ilefli^ctlrin, Refrac- 



,, and Inflection of Ligln, &c. ; and Mr. Charges BoNN-ycASTLR's 



imunicacion respecting the Influence of Masses of Iron on the Mari- 



...s Compass. 



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

 siology of Botany. — A Plate illustrative of Mr. Hall's Percussion Gun- 

 l<ock; of Dr. Kitchivfr's Pancraiic Eye-Tube ; and of Mr. Par:;*': 

 Mooring Blocks. — A Plate exhibiting Sections, 5cc. of Mr. Malam's im- 

 firovcd Gas-Meter. — A Plate exhibiting the Discoveries made by C.apr. 

 Parry in the Polar Sea. 



Vol. LVII. A P!:ite illuftrative of Mess. CErsted and Ampere''; 

 Eleclro'-magnetic Experiments, and Mr. Pkrkins's Paper on the Com- 

 pressibility of Water. — A Plate illustrative of Mr. Jamieson's Marine 

 Thermometer Case, and Mr. Jennimcs'.s Mercurial LogGl.iss. — A Plate 

 illustrative of Dr. Hare's new ModiCcation of Galvanic Apparatus.— A 

 Plate representing a Doul>le Canal Lock, originally proposed for-tho lie- 

 gent's Canal, by Mr. R. H. Gower ; and a Modification of Elcctro-M.ig- 

 iictic Apparatus, by Mr. Tatum. 



Vol. LVIII, A Plaic illustrative of Mr. Geo. Ixnes's C.ilculations of 

 the Annular Eclipse of the Sun, wiiich will haprpen on the l.'Jih of May 

 18.'5G. — A Plate descriptive of ih.; Hydrostatic Balance.^ of Isaiah 

 Lukens and Dr. Coates. — A Plate illustrative of" An Introduction l<» 

 the Knowledge of Funguses." — A Plate illustriitive of Professor Davy's 

 Jvactonieter, and of Mr. John Murray's portable Apparatus for restor- 

 ■': the Action of the J^ungs. — A Plate by Portkii, illustrative of Mr. 

 •iooLCRAi t's Account of the Native Copper on the Southern Shore of 

 .•..ir.e.Supcrior ; and of Dr. Millak's Obo'.'r-.:(t!ons and Erperimcnts on 

 the Rose ot Jciicho. 



