


To the Honourable 
Robert Boyle E{q; 
&EFT ER I had finifhed the foregoing 
aSh Books, le which, I conceive, as far as 
: Na Glafles will yer lead us, Ihave clearly De- 
Ye ferib’'d and Delineated the Steacture of a 
S Plant; and have endeavow'’d, in fome 
part, to Uufold the Reafon and Scope of Nature there. 
in: I was willing to fit down, and leave what remained, 
to the Improvements of the Prefent and Succeeding 
Ages. 
But in Difcourfe upon this Subjed, You have been pleafed 
frequently io infift, That I fbould by no means omit, to give 
likewife, [ome Examples of the Mechanifme of Nature iz 
all the other Parts. The Performance whereof therefore, 
next to the Obedience I owe to the Royal Society, is 10 
be looked upon, as a Due tothe Authority which Your Fude~ 
ment hath over me. 
This I have faid, that, if what is herein done, fhali prove 
acceptable unto Learned Men ; they may know, To whom they 
are oncemore to give their Thanks: After they have fo often 
done it,upon (a better fcore) the Publifbing of Your own Exe 
cellent Works. In which, there feems to be a Queftion, Whe- 
ther Your Continual Endeavours, to enlarge the Bounds of 
Natural Knowledge, or Your Succeffes therein, have been 
the Greater: So that; whereas Nobility iz fome, dothi 
only 





































































