CH.I} 



MICROSCOPE AND ACCESSORIES 



8a 



FIG. 18. Lens-holder (The Bausch FIG. 19. The Hastings Aplan- 



& Lomb Optical Co.) a tic Triplet. (The Bausch & Lomb 



Optical Co. ) 



FIG. 20. Dissecting Microscope. This is simply a device for holding the lens 

 and the object to be observed. ( The Bausch & Lomb Optical Co. ) 



