[ 34 ] 



and the years 1738, 39, 51, 52, ^6, 6;^ and 66 were wet. Now 

 on infpecfling the table which I have extradled from Dod^or 

 Rutty 's obfervations, it will be found that the Summers of 

 each of thofe are marked dry, except the year 1750, which 

 was certainly different from that of Lyndon, and 1760, which 

 he denotes variable. As to the wet years they both perfedtly 

 agree. A ftandard conformable to their ideas may be deduced 

 from my own obfervations of that frequency and quantity of 

 rain which mufl: conftitute a wet or dry period ; its confor- 

 mity with Mr. Barker's determinations may be feen in the 

 following tables : 



T A B L E T H E F I R S T. 



Of the Sluantity of Rain in dry Summers. 



On 



