O/Objects in'General* 51 
contained either in animal or vegetable Bo¬ 
dies. 
Under one or other of thefe three Heads 
almoif every thing around us affords Matter 
of Examination, and may conduce both to 
our Amufement and Inftru&ion ; as I hope 
more particularly to fhew. 
Many, even of thofe who have purchafed 
Microfcopes, are fo little acquainted with 
their general and extent!ve Ufefulnefs, and 
fo much at a Lofs for Objects to examine by 
them ; that, after diverting themfelves and 
their Friends, fome few Times, with what 
they find in the Sliders bought with them, 
or two or three more common Things, the 
Microfcopes are laid atide as of little farther 
Value ; and a Suppofition that this muft be 
the Cafe, prevents many others from buying 
them : whereas, among all the Inventions 
.that ever appeared in the World, none can 
perhaps be found fo conflantly capable of 
entertaining, improving, and fatisfying the 
Mind of Man.—To evince this, and excite 
thofe whofe Time and Circumftances permit, 
to this delightful Study, is the Intention of 
my writing; and as Curiofity, the univerfal 
Paffion of Mankind, may this Way continu¬ 
ally be gratified, .1 hope I {hall not write in 
vain. And it I can hereby induce any to 
pafs thofe leifure Hours agreeably and ufe- 
fully in contemplating the Wonders of the 
E 3 Creation # 
