The Microfcope explained. xix 
opening, where the face is to be applied : COEmn, is 
a Aeeve of cloth ; m n, the wriftband to be buttoned up¬ 
on the wrift, when you trace the out-lines of any land- 
fcape. 
When you have done with the inffrument at anytime, 
pufh the fquare hiding tube clofe down; take off the 
upper part AD wtr, turn the fmall end downwards, 
and put it into the lower part r E W. Take off the 
face piece a b c, put it into the box, and cover the hole 
it leaves with a Aider. Pulh in the fleeve, and cover it 
with the Aider prepared for that purpofe, and the inftru- 
ment will be preferved from duft, after you have covered 
it at the top. 
Note, all the fmall parts maybe included in the lower 
fruftrum rB, and in the circular head ADK, or they 
may be packed in a feparate box. 
The double conflrudled microfcope. 
A B C, fig. io. reprefents the body of this microfcope; 
it contains an eye-glafs at A, a broad lens at B, 
and a magnifier fet in a button, which is fcrewed on at 
C ; one of thefe buttons is reprefented by itfelf at Q. 
There are fix of them belonging to this microfcope, 
which are numbered r, 2, 3, 4, 5, 6, the lead: num¬ 
ber being the greateft magnifier. 
The body of the microfcope ABC, is fupported by 
an arm D E, into which it may be put or taken out at 
pleafure. This arm being fixed to the Aiding bar F, 
may be raifed or depreffed to any height within its li¬ 
mits, upon the main pillar a b, which being fixed in 
the box be, is by means of the brafs foot d, fcrewed 
upon the mahogany pedeftal X r, in which is a drawer 
at w, containing all the apparatus. 
When the upper furface of the arm D E, is placed to 
that number on the fixed bar ab, which correfponds to 
c 2 the 
