104 Tur MicROoscorE. 
Objections have been made to this form of adjustment. 
One English writer has characterized as “barbarous” the in- 
clination of the stage. 
Let us see how “ barbarous ”’ it is. 
1. Ihave used it successfully with objectives as high as 
Tolles’ ,, 4 system, 180° angular aperture immersion objec: 
tive. - 
2. On calculation I find the elevating of this distal tangen- 
tial point of the field over the proximal tangential point of the 
field is, for a + inch objective about z,'55 inch. 
3. Again from the difficulty I have had with stages of or- 
dinary microscopes in the use of my Tolles 4, inch objective I 
judge that some stages must have a considerable inclination 
from a horizontal line exactly at right angles with the tube 
axis. So that practically a truly square stage at a right angle 
absolutely perfect, with the tube axis, is not always found even 
among microscopists—civilized as in America. 
4, However, to obviate all annoyance from this objection 
the late and lamented Dr. Louis Elsberg, of this city, suggested 
and I have adopted the idea of multiple cams, one at each cor- 
ner of the stage; the two distal cams being on the same axis 
and the two proximal cams on the same axis. Rod or rods con- 
nect the arm levers and springs hold down the stage on the 
bed stage plate. The combined action of these cams gives 
horizontal motion. 
5. The late Robert B. Tolles sent out many microscop2s 
with the inclined stage and approved of it. A man who made 
such improvement and splendid work in microscopy could not 
be called a “barbarian.” Still after this presentation if any 
one chooses to call me “one” J think I can stand it. It may 
be said many microscopists (Mr. Tolles among the rest) have 
been as bad if this was not a new idea, and all said it was save 
Dr. Salisbury, of this city, who said that the late Dr. J. Law- 
rence Smith, of Louisville, Ky., advanced the same idea some 
years ago. 
We would call attention to the new advertisement of Mr. 
Zentmayer. He now offers some unusually fine apparatus, and 
at a price within the reach of all. 
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