110 L. CASELLA'S CATALOGUE 



ACHROMATIC OBJECT GLASSES FOR MICROSCOPES. 



The utmost care being taken in the construction of these lenses, the fullest 

 confidence may be placed in their excellence, their power of definition and penetration 

 being unsurpassed. 



Those marked * have an adjustment for covered and uncovered objects. 



SECOND SERIES 



THIRD SEEIES SEPABATING GLASSES. 



