16 
WATSONS’ 
“BACTIL” 
MICROSCOPE 
TRY WATSONS’ APOCHROMATIC OBJECTIVES 
They are superb 
W. WATSON & SONS, Ltd. Manufacturers 
313 High Holborn, LONDON, W.C.l. Established 1837. 
Constructed to the specification of the British Science Guild for high-power .Research Work. 
The latest and best Microscope 
for Laboratory Research Work and 
Photo-Micrography. 
SPECIAL FEATURES 
Body — two inches diameter. 
All movements fitted with sprung fit- 
tings and adjusting screws to com- 
pensate for wear. 
Fine Adjustment by Vertical Lever, j 
Removable Mechanical Stage. 
Compound Substage with screws to > 
centre and rackwork to focus. 
Top of limb 
to end of i 
Substage 
Carrier, in 
one 
solid casting. 
Rigidity, 
Accuracy and 
Perfect 
Action. 
Price in Case : 
£27 10 0 
For full 
particulars of 
the above 
and other 
Microscopes 
for Students 
and all 
classes of 
work 
send for 
Watsons’ 
Catalogue. 
