Letters ^Afr. Ray, &^c. 327 
fent I call all Infefls that have naked 
and fmooth, not farinaceous Wings), 
both Bipenncs and Quadripennes, are 
in a manner infinite, nor Hath their 
Hiftory been with Diligence profecuted 
by any Man that I know of, except 
Mr. Willughby., whofe Manufcript I 
hope to procure. 
I cannot but admire your Induftry 
and Patience, in fearching out and 
obferving the various Species of Gnats, 
with the Manner and Procefs of their 
Generation, and the Succefs you have 
had in difcovering them ; which may 
encourage you to proceed in fuch 
Enquiries, to which you are lb well 
qualified, and, if I may fo fay, gifted. 
For I look upon fuch a Sagacity in 
fearching out, and Happinefs in find- 
ing, new Things, as a Gift of God. 
Were there but a fufficient Number 
pf fuch Men, who would apply 
Y 4 them- 
