ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



693 



mirror carj bo adjusted at any angle desired for illuminating a trans- 

 parency or mici'oscopic object. 



To use the solar Microscope or stereopticon, place it in a window 

 exposed to direct sunlight, and adjust the mirror so that the light enters 



Fig. 84. 



Fig. 85. 



the condensing lens parallel with its axis ; adjust Microscope or stereop- 

 ticon lens ; place the object on the stage, or, if a transparency, in front 

 of the condenser, and a well-defined image is seen on the screen. To 

 use the optical parts of the instrument just described with artificial 



