H I S TORY 



OF 



THE SOCIETY. 



IT has been thought more confiftent with the form which the 

 Tranfadions of the Society have afTumed in this volume, to . 

 arrange the abflrads and accounts of papers in the order of ^the 

 fubjedls, than in the order of time. Under each head, the papers . 

 are placed according to the dates of their communication.. 



METEOROLOGY. 



A■CoMPA^lISON of fome Obfervations on the Diurnal Varia- 1799. 



tions of the Barometer, made in Peyrouse's Voyage round the ^ J^"' 7- 



■' " Diurnal varin- 



world, with thofe made at Calcutta by Dr Balfour, was read ''""'oftheba 



' ' rometer. 



by Profeiior Playfair. 



A 2 The 



