Wilson’s Single Pocket Microfcope . 11 
O. is a little HairBrufh or Pencil, where¬ 
with to wipe any Dull from off the Glaffes, 
or to take up any fmall Drop of Liquid 
one would examine, and put it upon the 
Talcs or Ifinglafs. 
P. is a Tube of Glafs, contrived to con¬ 
fine living Objeds, fuch as Frogs, Fifhes, 
&c. in order to difcover the Blood, as it 
Breams along the Veins and Arteries. 
All thefe Particulars are contained in a 
little neat Box, very convenient for carry¬ 
ing in the Pocket. 
When an Objed is to be viewed, thruR 
the Ivory Slider, in which the faid Objed is 
placed, between the two flat Brafs Plates 
EE: obfervingalways to put that Side of the 
Slider where the Brafs Rings are, fartheR 
from your Eye. Then fcrew on the mag¬ 
nifying Glafs you intend to ufe, at the End 
of the InRrument G ; and looking through 
it againft the Light, turn the long Screw 
CC, till your Objed be brought to fit your 
Eye; which you will know by its appearing 
then perfedly diRindand clear.—’Tis beR 
to look at it RrR, through a Magnifier that 
can fhew the Whole thereof at once, and 
afterwards to infped the feveral Parts more 
particularly with one of the greateR Magni¬ 
fiers : for thus you will gain a true Idea of 
the Whole, and of all its Parts. And tho’ 
the greateR Magnifiers can Riew but a mi¬ 
nute Portion of any Objed at once, fuch as 
8 the 
