THE Microscope. 245 
struction, and will fit any microscope having a stage diameter of 
three and one-half inches. It can be completely rotated, admits 
the use of very oblique light, and has the clips and stops for the 
Maltwood finder. 
It has the advantage of a variety of movements within a small 
compass. 
THE GRUNOW PHYSICIANS MICROSCOPE. 
In this instrument, 
which is designed for 
workers, the whole stand 
is of brass, with rack and 
pinion coarse and micro- 
meter screw fine adjust- 
ments. 
The stand can be in- 
clined toany angle. The 
mirror is mounted on a 
double arm so it can be 
- swung above the stage for 
the illumination of opa- 
que objects. The  sub- 
stage is on a pillar at- 
tached to the base of 
the microscope, and may 
furned aside, thus facili- 
tating the exchange of 
accessories without dis- 
turbing the object under 
the field. 
The chief points are 
the mounting of the mir- 
ror and of the sub-stage 
in the manner alluded to: important matters where compactness, 
with convenience and room is desired. 
THE recent unusual demand for THE Microscope, has ex- 
hausted our September edition. We expect later to reprint this 
number, but subscribers who do not bind or file away their copies 
of this journal, will convey a favor by returning the September 
number to us. We will pay ten cents for each copy received in 
good condition. 
