3° 



HIS TORT of the SOCIETK 



1788. 



Dec. 1. 



At the fame Meeting, Sir James Hall read a paper on the 



Sir Ja. Hall on t-, . r _, . _, * * 



pumice ftonc. formation or rumice atone. 



MrLeflie on Mr Playfair read a paper by Mr John Leslie, on the 



certain math? Solution of certain indeterminate Problems in Mathematics. 

 This paper is printed in this volume. [No. XIV. Phyf. Cl.~\ 



Lit. CI. Dr John Hill read a continuation of his EfTay on 



Dec. 15. 



word* ° n yn ' Synonymous Words. [See fupra, Feb. 18. 1788.] 



APPEN- 



