MICROSCOPIC OBJECTS. 



177 



shorter one producing about double the power of the 

 long eye-piece. (Remember, the shorter the eye-piece 

 the higher the magnifying power.) Either eye-piece 

 fits into the body of the microscope, b (p. 175). 



For viewing opaque objects a silver concave reflector, 

 k, (usually called a cup, or Leiburkuhn,) is fitted over 

 the object-glass, as seen in the annexed figure, / being 

 the slider on which the object m is attached. 



The most convenient form of polarizing apparatus 



I adapted for this microscope is seen in the above engraving. 



The upper figure represents the analyser, which consists 



