Wilson’s Single Pocket Microfcope. 9 
CHAP, III. 
Of Mr. Wilson's Single Pocket 
Microfcope. 
r ri H E firft that I fhall mention, is 
Mr, Wilson's Single Pocket Micro - 
fcope; the Body whereof, made either of 
Brafs,Ivory,or Silver, is reprefented(P/^I.) 
by AA. BB. 
CC. is a long fine-threaded male Screw* 
that turns into the Body of the Microfcope. 
D. a convex Glafs at the End of the faid 
Screw. 
*Two concave round Pieces of thinBrafs, 
with Holes of different Diameters in the 
Middle of them, to cover the faid Glafs* 
and thereby diminifh the Aperture, when 
the greateft Magnifiers are employed. 
EE. three thin Plates of Brafs within the 
Body of the Microfcope, one whereof is bent 
femicircularly in the Middle, fo as to form 
an arched Cavity for the Reception of aT ube 
of Glafs, whereas the two flat Plates are to 
receive and hold the Sliders between them, 
F. a Piece of Wood or Ivory, arched in 
the Manner of the femicircular Plate, and 
cemented thereto. 
G. the other End of the Body of the Mi« 
crofcope, where a hollow female Screw is 
adapted to receive the different Magnifiers. 
H, a 
