LABORATORY MICROSCOPES 



[ CH. II 



FIGS. 85, 86. Queen & Co's Continental Microscope, No. II. Dust- 

 proof, triple nose-piece. The difference between this and the ordinary form 

 can be seen by comparing with Fig. 87. This form of revolving nose-piece has 

 been made for many years by Winkel of Goettingen. See legend of Fig. 40. 



