Bauhaus-Universität Weimar

Optic Projection: Principles, Installation and Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
Gage, Henry Simon and Henry Phelps Gage
Fig. 146. Use of the Simple 
Magic Lantern Condenser 
and Lamp and an Ordinary 
Microscope for Projection. 
This is a magic lantern with 
iron legs and rods for the support 
and guidance of the parts (fig. 
33). The slide-carrier bellows 
and lantern objective with the 
guide rods have lieen removed, 
leaving only the condenser, arc 
lamp and lamp-house. The short 
tubes for the lamp arc supported 
at the left by the ordinary legs 
of the apparatus. In front a 
support of wood is used when 
necessary. As the whole lamp and 
condenser would be too low for 
the axis of the microscope it is 
raised on a block (Block,) to the 
proper height. There is a base¬ 
board on which all the apparatus 
is placed, and at the left there is 
a track made of rods or tubes as 
in fig. 158,159 on which the block 
supporting the microscope can 
be moved back and forth in line 
of the axis. For a water-cell, a 
glass box made as described in 
§ 394a is set on a block in the 
path of the cone from the con¬ 
Commencing'at the left : 
Arc lamp The hand-feed, 
right-angle carl Kin arc lamp. 
s. s Set screws. 
This is also an excellent meth¬ 
od of making small glass boxes for 
experimental work where water is 
the liquid medium. Such boxes 
also have been used continuously 
for months for observing the 
growth of aquatic plants. If one 
side is made of cover-glass, then 
high powers of the microscope 
can be used to study the growth 
on the inside face of the cover- 
We are indebted to Prof. Romyn 
Hitchcock for the method of mak¬ 
ing water-cells by the aid of 
Ripolin paint.


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