50 Tue Microscope. 
they slide is made in two sections, which can be readily and 
firmly united by meansof stoutthumb screws. A scale, divided 
into inches, is attached to this frame work, so that the length to 
which the bellows are extended can be seen at a glance, an ar- 
rangement of great convenience in ascertaining the magnifying 
power employed, as will be explained hereafter. A female 
screw is firmly attached to the under side of the camera for 
securing the latter to the platform carrying the microscope and 
lamp. 
This platform is usually a board from three to four feet in 
length, and ten inches wide, upon one end of which is a raised 
portion to which the camera is attached. The height of this 
raised platform, is regulated entirely by that of the microscope. 
When the body of the latter is inclined to a horizontal position 
upon the platform, the camera must be placed at such a height, 
that the centre of its cone and that of the tube of the microscope 
shall exactly correspond. In the accompanying illustration, 
(taken from a photograph,) the microscope is seen mounted 
upon a little supplementary table, rendered necessary from the 
platform having been originally made for use with a much 
larger microscope, the horizontal tube of which was on a level 
with that of the camera when the microscope stood direct upon 
the table of the platform. 
By carrying Camera, Microscope and Lamps upon the one 
LSS=== 
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i 
Walmsley’s Photo-Micrographic Camera, 
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