674 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
Old French Microscope. — The President] exhibited, at the meeting 
of the Society on October 14th, an old French Microscope, which, if its 
date could be accurately determined, might be of considerable interest. 
h * 8 an archaic look about, it, reminding one of‘Joblot’s 
(l/lo), but the rack and pmion focussing to the stage prevents its date 
