T O 
Martin Folkes, Rfp 
PRESIDENT, 
And to the 
COUNCIL and FELLOWS 
O F T H E 
Royal Society of London. 
Gentlemen, 
A N Attempt to excite in Man- 
. kind a general Delire of feareh- 
ing into the Wonders of Nature, 
will, I perfuade myfelf, be accepted 
favourably byyou,whofe Endeavours 
for the Advancement of Natural 
Knowledge, according to the Pur- 
pofe of your Inftitution, are efteern- 
ed by all the World. 
A 3 
It 
