iv ^he Mi cr of cope explained , 
of them is feen at C, a lamp IK is fufpended from the 
two ears G and H in fuch a manner that at every in¬ 
clination of the tube E F, the flame L may diredt its 
light through the center of the tube, and alfo of a plano¬ 
convex lump contained therein, and thence through an 
oiled paper, or a grey glafs, to the illuminating glafs 
Q_Q. The light thus tranfmitted to the mirror is amaz¬ 
ingly fine, it being nearly equal to that reflected from a 
bright white cloud on a fine lummer’sday. 
The objedt carrying piece D D hath a conical pin 
fitted to a hole in the Aider W, in which it may be 
turned Tideways, fo as to examine the feveral parts of any 
objedt that may be too large for the field of view. 
The fcrole hR, has alfo a conical pin fitted to a hole 
in the Aider V. 
By means of the Aider W, the objedt carrying piece 
D D may be readily fet nearly to its proper diftance from 
the magnifier in the button at C, and then by turning 
the large ivory head I, the body of the microfcope may 
be brought to its diftindt focus. But if this ftiould not 
be thought quite fuflicient, tighten the fcrew at H, and 
thereby turning the fcrew at X, the focus may be ad- 
jufted to the eye of any obferver with great precifion, 
and by moving the Aider V a little higher or lower, a 
proper fpot of light of any convenient breadth may be 
readily obtained. 
No. 3. is a cylindrical tube, in which an inner tube is 
forced upwards by a fpring; its ufe is to receive an ivory 
or glafs Aider, No. 1 and 2, the objedt being firft placed 
in the center of the hole at m, or the objedt may be laid 
upon a glafs Aider, No. 2. either of which are to be put 
between the plates h and i, and the cylindrical piece 
No. 3. put into the hole at T in the ftage X to which 
it is fitted. The hollow at k is to receive the glafs tube. 
No. 10. for confining a fmall water animal to fhew the 
circulation. 
