To his Honoured Friend 
Daniel Colwall Efq; 
Fellow of the Royal Society. 
SIR, 
Othing can be more fit, than to dedi¬ 
cate a Catalogue of that FATufmm 
to your Self, of which you are 
the Founder. You having, in your 
Devotion to the Royal Society , offered 
up to them That lo noble an Hecatombe. 
The truth is, I have herein prolecuted, what the 
‘Royal Society , by their Order for the making and 
publiflhing of this Catalogue, had begun: they ha- 
ving done the lame, as with regard to Common 
Ule; lo to return that which is but Right to your 
Self, and that they might always wear this Cata¬ 
logue, as the Miniature of your abundant Refpe&s, 
near their Hearts. 
Neither mull' your Voluntary Undertaking for 
the Engraving of the Plates for this Work, be un¬ 
known. You having done this, not only out of 
refpeft to my Self; but likewile in order to a Pub- 
lique Good,; whereby you are a Benefa&or to all 
Ingenious Men. 
Befides the particular regard you had to the Royal 
Society it Self; which leeming ( in the opinion of 
feme ) to look a little pale, you intended hereby, 
A 9 to 
