ENGRAVINGS. 



Vol. XLIX. APlate to illustrate Dr. Etans's Communication on 

 Terrestrial Mapn^etism ; a new" Electro-atmospherical Instrument ; and 

 Mr. Andrew Horn's P;jper en Vision, — A Quarto Plate to illustrate 

 Jflrs. Ibbetson's Physiology of Vegetables. -i~A Plate to illustrate the 

 Solar Spots which appeared during the Year 1816;— and Mr. Betan's 

 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. ; also a Newr Reflecting Goniometer, — -A Plate to illustrate Chevalier 

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

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

 dification of Nooth's Apparatus, &c. 



Vol. I* A Plate to illustrate. Sir Humphry Davy's new, Researches 

 on- Flame, and Sir George Cayley's Paper on Aerial Navigation. — 

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

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

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

 for Sublimatioft of Iodine — Model of a Safety Furnace by Mr. Bakev/bi,l 

 —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 Physioicgy of Vegetables. — A Plate to illus- 

 trate Mr. Dickinson's new System of Beaconing. 



Vol. LI. A Plate Illustrative of Mr. Ca?el Lofft's Prfper on the 



Probability of Mcteorolites being projCv'ted from the Moon Two 



Plates : one, of Mr. H, T&ittOn's Improved Apparatus for Distillation ; 

 and another, of the Figures in Bratm-ey's Gardening illustrp.tive of the Ar- 

 ticle on the Kaleidoscope. — A Plate illustrative of i\Ir«. Ibi;j;tson's Pa- 

 per on the Anatomy of Vegetables; and'Mr.TREDCOLo's on Revetemertt?. 



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

 ereaser for the unerring Manifestation of small Portions of the Electric 

 Fluid. — A Plate illystrative of Mrs. Ibbetson's Paper on the Fructifica- 

 tion of Plants. — A Plate illustrative of the Rev. John 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 of Serpents. 



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

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

 on the Purification of Coal Gas. — A Plate representing Mr. Ri;nnie*s 

 Apparatus employed in his Experiments on the Strength of Matcrliilsj 

 and the Marquis RiDOLPHi'a Improvem-^nt on the Gas BIow-pipe.--~A 



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

 Lowt's on the Purificat:o:x of Coal Gasj and Mr. Hughes's on asccr- 

 Tvning Distances. — A PLite illustrative of Dr. Olintuus Gri:gory's 

 • ijcron the diflercnt Rates of Pekninston's A .roi.oaiical Clock at the 

 i imd of Balta, and at Woolwich Common. ' 



Vol. LIV. A Plate illustiatlve of the Menai BRrDCi. 



