1i8 TRICHINA SPTRALIS. 
may be soaked for some minutes in acetic acid. After a lapse of 
five to ten minutes, place the flesh on a slip of glass, spread it out 
as much as possible, and cover it with another piece of glass, which 
should be quite thin. The two slips of glass are then pressed ~ 
closely together and placed on the stage of the microscope. Those 
who are provided with one of those well-known compressoriums, in 
which the two plates of glass are forced together by means of a lever 
and a screw, will find this little piece of apparatus just the thing 
for the purpose. 
To those who are not provided with a microscope, or who wish 
to procure a cheap apparatus, combining both microscope and 
compressorium, we would recommend the trichinoscope, recently 
brought out by the Bausch & Lomb Optical Company, of Rochester, 
N. Y., and shown in the accompanying engravings. The instru- 
ment is made of two forms, of which Figures 6 and 9 give a clear 
idea. In Figure 6 the plates of glass between which the flesh is 
compressed are the ordinary glass slips (3 inches by 1 inch) used by 
microscopists. In the other form the glass plates are round discs. 
TT I ie, 
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Fig. 7. 
