• ENGRAVINGS. 

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

 reaser for the unerring Manifestation of small Portions of the Electric 

 IJ. — A Plate illustrative of Mrs. Ibbetson's Paper on the Fruciifica- 

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

 he Formation of the Earth. — A Plate illustrative of Capt. Rater's 

 cle on the Pendulum ; and New Apparatus for impregnating Liquids 

 ' Gases. — A Plate illuslrative of Sir H. Davy's Apparatus for Vobu 

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

 joisf'.BOUs Fangs of Serpents. 



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



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



;he Purification of Coal Gas. — A Plate representing Mr. Rennie's 



\; naratus employed in his Experiments on the Strength of Materials; 



^iind tlie Marquis RiDOLPHi'3 Improvement on the Gas Blow-pipe. — A 



^M.ite illustrative of Mr. Meikle's Paper on Calorific Radiation; Mr. 



ILowe's on the Punfication of Coal Gas; and Mr. Hughes's on ascer- 



•daining Distances. — A Plate illustrative of Dr. Olinthu? Gregory's 



f'apcron the different Rates of Pennington's Astronomical Clock at the 



^|[slind ofBalta, and at V\''ooKvich Common. 



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

 l;rative of Mr. Lowe's Description of a Mercurial Pendulum. — A Plate 

 I'l lucrative of Mr. Hare's Calorimotor, a new Galvanic Instrument. — A 

 _! te illustrative of Captain Sabine's Paper on Irregularities observed in 

 J. die Direction of the Compass Needles of the Isabella and Alexander in 

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

 ariatiou of the Magnetic Needle as observed on Ship-board. 

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

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

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

 . liering Fiuit; Mr. Young's Mode .of preparing Opium from the 



tapaver somniferum ; and of Captain Forman's Essay on a Property in 

 ii^ht which hitherto has been unobserved by Philosophers. — A Plate de- 

 ptive of Mr, Cuthbert's Improved Hydro-pneumatic Apparatus, &c. 

 . — V Plate Illustrative of Capt. Forman's Essay on tlie Refl.'ction, Refrac- 

 and Inflection of Liglit, &c. ; and Mr. Charlks Bonnvcastle's 

 imimicacion respecting the Influence cf Massca of Iron on the Mari. 

 !r*s Compass. 



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

 liology of Botany. — A Plate illustrative of Mr. Hall's IVicussion Gun- 

 "lOck; of Dr. Kitchinir's Pancratic Eye-'l\ibc ; and of Mr. Park's 

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

 oved Gas-Meter. — 1\ Plate exhibiting the Discbvcries made by Capt. 

 ARRY in the Polar Sea. 



Vol. LVII. A Plate illustrative of Mess. (Erster and Ampere's 

 lectro-magnetic Experiments, and Mr. Pirkins's I'aper on the Com. 

 .ressibility of Water. — A Plate illustrative of Mr. .Famieson's M.irine 

 fheTmon;eter Case.and Mr. .Jennings's Mercurial Log Glass. — A Plate 

 llustrative of Dr. Hare's new Modification of CJalvaiiic Aj^paratus, — A 

 Plate representing a Double Canal Lock, originally proposed for tlie Re- 

 ent's Canal, by Mr. R, H. Gower ; and a Modification of Electro-Mag- 

 etic Apparatus, by Mr. Tatum. 



Vol. LVIII. A Plate illustrative of Mr. Geo. Innps's Calculations of 

 the Annular Eclipse oCltfie Sun, which will happen on thcl.jih of I\44y 

 1836.— A Plate descriptive of the Hydrostatic Balances of Isaiah 

 LuKENs and Dr. Coates.— A Plate illustrative of" An Imroduciion to 

 the Kjiowledge of Funguses." 



