SWIFT & SON’S 
IMPBOVEB 
CHALLENGE BINOCULAR MICROSCO 
WITH 
NEW THIN MECHANICAL STAGE, 
I 
1-inch, and i-inch OBJECTIVE ii 
STAND CONDENSER, 
PAIR OF EYE-PIECE;; 
IN CABINET, 
£20 Os. Od. 
STUDENT 
MICROSCOPES 
FROM 
£3 Os. Od. 
TO 
£150 Os. Od. 
This Instrument t 
the merit of 
Three First Clas; 
International Awari 
UNIVERSITY OPTICAL WORKS, 81 Tottenham Court Road, London, 1 
