88 



ELEMENTARY CHEMICAL MICROSCOPY 



16). Instead of the i6-candle-power lamp one of about 20 candle- 

 power may be substituted. 



The author has found this simple and inexpensive apparatus 

 very satisfactory. A clear, bright, uniformly illuminated field 

 is obtained and there are no adjustments necessary. 



FIG. 41. Chemical Microscope with Stage removed and Auxiliary Stage inserted 

 in the Substage Ring. 



Maintaining the Alignment of Radiant and Illuminator may 



readily be accomplished in microscopes provided with an adjust- 

 able substage by removing the condenser or polarizer and sup- 

 porting the specimen upon the substage ring. In the case of the 

 chemical microscope, the stage is removed by loosening the 



