100 



SUMMAltY OF ClUIIENT RESEARCHES RELATING TO 



The illuminating api aratus is provided with g. od iris diaphragm and 

 gives light sufficient for working with a T ^ immersion lens. The stage 

 is large enough to receive the ordinary object-slides safely : it is strong 

 and not removable (as is generally the case with travelling Microscopes) : 



Fig. 21. 



it is rigidly connected with the pillar, and so provides a permanent 

 centring. Figs. 20 and 21 show the instrument half the full size : in 

 figure 20 it is set up for use : in figure 21 packed away in its case. 

 In order to prepare the Microscope for use the feet are everted, the 



