wi// 



^ ^ ^ ^ 



To the Honourable 



f ■ ■ . ■ ' ^ 



Sir Robert SouthiPelly Knight, 



VrcMent of the Rojal Socktj/. 

 S I R, 



THE Subjed of thefe fol- 

 io wing Papers being Phi- 

 lofofhicalj and fo not fo- 

 reign to the Converfetions you 

 frequent, I could not dired 

 them better than, to the Per/on 

 whom the Royal Society have fo 

 often made choice of to fill their 

 Chair. For tho' your Bufinefi 

 hath been much in the open 

 World, yet am I well affured 

 that Things of this Nature have 

 always been your Recreation 



A3 and 



