ENGRAVINGS. 



Vol. LI. A Plate illustrative of Mr. Capfl Lofft's Paper on the 

 Probability of Meteorolites being projected from the Moon. — Two 

 Plates : one, of Mr. H. TRiTTON-sJmproved 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 on the Anatomy of Vegetables; and Mr.TRUEGOLD's on Revetements. 



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

 creaser for the unerring Manifestation of small Portions of the Elect) ic 

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

 tion of Plants. — A Plate illustrative of the Rev. Johw Michell'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 oi Serpents. 



Vol. LII I. 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 the Marquis Ridolphi'g Improvement on the Gas Blow-pipe. — A 

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

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

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

 Paper on the different Rates of Pennington's Astronomical Clock at t'ha 

 f Island of Balta, and at Woolwich Common. 



Vol.LIV. A Plate illustrative of the Menai Bridge. — A Plate ilh^- 

 jf trative of Mr. J. ovi'e's Description of a Mercurial Pendulum. — A Plate 

 ' illustrative of Mr. Hart.'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 /)f Discovery ; and Mr. Scoresby's Anomaly in the Va- 

 riation of the Mai»neiic Needle as observed on Ship-board. 



Vol. LV. A Plate exhibiting Sketch of the Comet's Path of July 1S19. 

 — A Plate illustrative of tlie Annular Eclipse of the Sun ori 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 somniferum ; and of Captain Forman's Essay on a Property in 

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

 scriptiveof Mr. Cuthbert's improved Hydro-pneimiatic Apparatus, &c. 

 — A Plate illustrative of Capt. Forman's Essay on the Refl'-ciion, Refrac- 

 tion, and Inflection of Light, &c. ; and Mr. Charles Bonnvcastle's 

 Communicacion respecting the Inlluence of Masses of Iron on the Mari- 

 ner's Compass, 



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

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

 Lock; of Dr. KiTCHiNi r's Pancratic Eye-Tube ; and of Mr. Park's 

 Mooring Blocks. — A Plate exhibiting; Sections, &c. of Mr. Malam's im- 

 f)ioved Gas- Meter.—- {Y Plate exhibiting the Discoveries made by Capt. 

 Parry in the Polar Sea. 



Vol. LVIl. A Plate illustrative of Mess. G^rsteo and Ampfke's 

 Electro-magnetic Experiments, and Mr. Perkins's P.iper on the Com- 

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

 Thermometer Case, and'Mr. Jennings's Meicurial LogGhiss.^A Plate 

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

 Plate representing a Double Canal Lock, originally |iro|)Osed for the Re- 

 gent's Canal, by Mr. R. H. Gower ; and a ModiHcatiou of Electro-M.iij- 

 jictic Apparatus, by Mf.Tai l'm. 



