22 
Of the Solar, or 
C H A P. VI. 
ij’be Solar, or Camera Obscura 
Microfcope. 
T HIS Microfcope depends on the Sun- 
fhine, and muffc be made ufe of in a 
darkened Chamber, as its Name implies. 
It is compofed of a Tube, a Looking 
glafs, a convex Lens, and Wilson’s Single 
Pocket Microfcope before defcribed, p. g . 
The Sun’s Rays being directed by the 
Looking-glafs through the Tube upon the 
Objed, the Image or Pidure of the Qbjed 
is thrown, diiliudly and beautifully, upon 
a Screen of white Paper, or a white Linen 
Sheet, placed at fome Diilance to receive 
the fame ; and may be magnified, to a Size 
beyond the Imagination of thofe who have 
not fecn it: for the farther off the Screen is 
removed, the larger will the Objed'appear; 
infomuch that a Loufe may be magnified 
to the Length of five or fix Feet, or even a 
great deal more : but it is indeed more dif- 
tind, when not enlarged to above half that 
Size * *. ~ The 
e « o c 
* Having, in the Jscond Edition of this Work, inferred a 
curious Draught of the SolahMicrofcope , which was not in 
the former Imprefiion, and given a more particular De- 
fcription of that Initrumenr, and its Apparatus, than I 
poflibly could before : left the Purchafers of the firfi Edition 
fcould have found Reafon to complain of beinp unkindly 
. *■ G ‘ t 
u led. 
