vi CONTENTS. 



III. Account of a Series of Experiments, shewing the Ef- 

 fects of Compression in modifying the Action of 



Heat. By Sir James Hall, Bart. - 71 



IV. Of the Solids of Greatest Attraction, or those which, 



among all the Solids that have certain Properties, 

 Attract with the greatest Force in a given Direc- 

 tion. By Mr Play fair. - _ Page 187 



V. An Account of a very extraordinary Effect of Rare- 

 faction, observed at Ramsgate, by the Reverend S* 

 Vince. Communicated by Patrick Wilson, Esq. 245 



VI. Some Account of the large Snake Alea-azagur, (Boa 

 Constrictor of Linnaeus),/oMW in the Province of 

 Tipperah. Communicated by Mr James Russell. 249 



VII. Chemical Analysis of a Black Sand, from the River 



Dee in Aberdeenshire ; and of a Copper Ore, from 



Arthrey in Stirlingshire. By Thomas Thomson, 



M.D. - 



VIII. New Series for the Quadrature of the Conic Sections, 



and the Computatioti of Logarithms. By Mr Wal- 

 lace. - 



253 



269 



IX. Remarks on a Mineral from Greenland, supposed to 

 be Crystallised Gadolinite. By Thomas Allan, 

 Esq: - - - - 345 



X. On the Progress of Heat when Communicated to 

 Spherical Bodies from their Centres. By Mr Play- 

 fair. - - . . .. 35s 



XI. 



