TO THE 
Honourable 
John Winthrop, Efq; 
Fellow of the Royal Society, 
&c. &c. 
SIR, 
P ERSONAL Friendfhips and Favours 
are become the trite Topics of Dedi- 
cations and public Addrefles, as if it 
concerned the Public to have upon Record 
the mutual Regard, private Perfons may have 
to each other : Therefore without expatiating 
here, lb far as Gratitude might lead me, on 
the many Favours you have honour’d me 
with, I ihall confine myfelf to the Relation 
Tour Illujirious Grandfather had, and Tourfelf 
have, to the Royal Society. 
No fboner were the Sciences revived at 
the Beginning of the laft Century, and that 
Natural Knowledge began to be thought a 
A Study 
