

A Fig. 1. B 



A: Diagram of the path of the rays for the representation of an object point lying in the front focal 



plane of the whole microscope. 

 B: Section through Stand III, together with the diagram of the path of the rays for the limitation of 



the field of view. 



/?,': hinder focal plane of the Objective AA; F, : front focal plane of the HUYGENIAN Ocular 2; F'\ hinder 

 focal plane of the whole Microscope ; T: effective Tube-length ; A : optical Tube-length. 



V, Full Size. 



Qavt 



