CONTENTS. 



XV. Cr ( r?ou$ Extracts from old English Booh, with 

 tU larks which prove, that the Telescope., &c. were 

 known in England much earlier than in any other 

 Count nf 60 



XVI. On the s I Chemical Affinity of the Elements of 

 Aim pheric Air: with Remark* upon Dr. Thomson's Oh- 

 servations on this Subject 79 



XVI'. On a distinguishing Property between the Galvanic 

 and Electric Fluids. By Mr. John Cuthbektson 83 



XVIII. Proceedings of Learned Societies 85 



XIX. Intelligence and Miscellaneous Articles 92 



XX. Extract frojn a Memoir on Platina, by Fourcroy 

 and Yauquelin U7 



XXI. On Animal Cotton, and the Inse&t u hichprjo s //. 

 By M. Baudry des Lozieres 



XXJI. Report made to the Class of the Physical. and Ma- 

 thematical Sciences of the French Natii 'lute, by 

 C. Ramond, respecting a Memoir ofQ. Dauih" itsox 

 on the Basalt** of Saxony, concluded 123 



XXIII. A short Account of Mr. Arthur Woolf's im~ 

 provement in the Construction of Steam-Engines .. 133 



XXIV. Experiments to ascertain whether there exists any 

 Affinity betwixt Carbon and Clay, Lime and Silcv, se-r 

 paratehj or as Compounds united with the Oxide of Iron 

 forming Iron Ores and Iron Stones. By David Mushet, 



Esq. of the Calder Iron- Works 137 



XXV. Dr. Thornton's Second Letter to Mr. Arthur 

 Aikin 141 



XXVI. Letter from Dr. Thornton, Lecturer on Botany 

 at Guy's Hospital, to Mr. Tilloch, Editor of t lie Phi- 

 losophical Magazine » 144 



XXVII. On the Freezing of Water in leaden Pipes, indi- 

 cating ]\ leans for its Pretention ; with some Thoughts 

 relative to the increased Temperature of tlw Earth at 

 small Depths. By G. J. Wright, Esq 147 



ill. Description of a Furnace destined for the Lique- 

 faction of Copal and Amber. By Professor Tingry 155 



XXIX. Parallel of Home de LTsle's and the Abbe 

 Hau r*S Theories of Crystallography 159 



XXX. On cutting Screws by Means of the common Turning 

 Lathe. By Robert Healy, A. B 172 



XXXI. On the Catoptr'teal and Dioptrical Instruments of 

 intients 176 



XXXII. A Report of the Stain of His Majesty's Flock of 

 finc-woolled Spanish S'ncip, for (be Year ending Michael- 



• 1803. By Sir Joseph Banks, P. R. S. 190 



xxxin. II* 



