Patents connected with the Microscope. By IF. II. Brown. . 263 
spaces wherein the instruments hereafter described or mentioned are 
to be contained or placed, in the center whereof is the aperture of the 
eye stop, marked e, and in the bottom or lower end thereof is the 
said object glass. E is the neck of the said case which the said top 
D slides upon. The Figure D represents the top drawn off at the 
joint C aforesaid, wherein at the upper end thereof the said eye-glass 
is fixed. The instruments to be placed round the aperture of the 
eye stop aforesaid are, F, a penknife ; G, a six inch rule ; H, a pair 
of compasses or dividers ; I, a pair of scissors ; K, a pen and pencil ; 
L, a bodkin and ear picker ; M, a pair of knippers with a file ; all or 
any of which said instruments, marked F, Gr, H, I, K, L, M, may be 
changed or omitted, and mathematical or other instruments for twees * 
are to be placed in their stead at pleasure. N is the slider of the 
microscope, with three magnifiers fixed therein, marked f, g , h. 0 
is an instrument to fix objects upon to be viewed thro’ the microscope, 
being a pair of forceps at one end thereof, and a fork at the other end 
thereof. P is the stem whereby it is to be set or fixed in any of the 
four holes marked p, in the microscope Q. In using the said Invention 
for a microscope, the object end of the said case is a lid, to be opened 
with a hinge after the manner of a snuffbox lid, as in the said Figure Q. 
On the inner side of the said lidd is fixed a silver concave speculum, 
for reflecting light upon opake objects held in the forceps, or stuck 
on the fork cf the said instrument 0, when fixed by the said stem 
in any of the aforesaid holes p. r, r, is an oblong hole or slit in the 
case under the said hinge, and in the said hole or slit is a small button 
that slides therein, and being thrust upwards towards the said hinge, 
carries up the head S, T 1} T 2 . The Figure S screws off from T 2 at s, 
the said T 2 being only the reverse side of T x . The aforesaid head b, 
in which the object glass is fixed as aforesaid, is screwed off from the 
outside of the said lidd, and the said peice S is to be screwed into the 
place of the said head so to be screwed off. Into the slitt or groove 
3, 3, in the said piece S, is to be thrust the said slider N, containing 
the said three magnifiers, thro’ either of which said magnifiers is to 
be viewed any object held by the said forceps, or stuck on the said 
fork, when placed by the said stem in either of the said four holes p, 
the magnifier g being greater than the magnifier /, and lesser than 
the magnifier n. The four spaces marked x in the said case or 
Figure Q, are four little boxes or repositories for small objects, that 
the user of the said Invention may chuse to preserve.” 
Stoker. 
There was a lapse of thirty-five years before any further patent 
referring to the Microscope appeared. In 1778 William Storer, 
Professor of Optics to George III., was granted a patentf for “ An 
* Twees[e] (Old English), a surgeon’s box of instruments. — Webster. 
t Specification No. 1183, dated March 4th and June ‘29th, 1778. Reprinted in 1856. 
