So 



LABORATORY MICROSCOPES 



[CM. II 



. .J' G - 79 ' A Q^en&Co's Continental Microscope, No. II. B. DusLfirool 

 triple nose-pnece The difference between tins and the ord.ua, y form can be seen 

 by compartng with Fig. s 6. This form of revolving nose-piece has been made for 

 many years by Winkel of Goettingen. 



