To His Grace 
CHARLES 
Duke of Richmond and Lenox, 
My Lord, 
I Beg Leave to prefent to Your 
Grace this Volume of Phi- 
losophical Transactions, 
being a Collection of feveral TraCts 
lately read before the Royal Society, 
whole Meetings You have fo frequent- 
ly honour’d with Your Prefence. 
Arts and Sciences always flourilh 
moll under, the Protection of Prin- 
ces and Great Men, who, them- 
felves engaging in the Search after 
Learning, do by their Examples ex- 
cite an Emulation among thofe, whole 
Bufinefs and Profeffion call them more 
immediately to the Improvement of 
the feveral Branches thereof I am 
perfuaded thefe Papers will meet with 
