116 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
Beck’s Larg*e “Continental Model’ 1 Microscopes. — Fig. 10 repre- 
sents one of Messrs. Beck’s large Continental model Microscopes 
which is fitted with a circular rotating and screw centering stage, rack- 
and-pinion focusing and screw cent, ring substage. The coarse-adjust- 
