( 10 ) 
Dr. Henri van Heurck's Microscope 
W. Watson 
& 
Sons, 
313 HighHolborn, 
LONDON, W.C. 
AND AT 
78 Swanston Street, 
Melbourne, 
Australia. 
FOR HIGH-POWER WORK AND 
PHOTOMICROGRAPHY, 
£18 10s, 
Full description of the 
above instrument, and 
Illustrated Catalogue of 
Microscopes, and appa- 
ratus, also classified 
list of 40,000 Micro- 
scopic Objects for- 
warded post free on 
application to 
ESTAB. 
1 837 . 
Without Each work to Draw-tube 
£18 
£16 
AS MADE BY W. WATSON & SONS TO 
THE SPECIFICATION OF Dr. VAN 
HEURCK OF ANTWERP. 
Fitted with Fine Adjustments of utmost 
sensitiveness and precision, not liable 
to derangement by wear. 
Has Hackwork Draw -tube to adjust Objec- 
tives to the thickness of Cover Glass. 
Can be used with either Continental or 
English Objectives. 
Fine adjustment to Substage. 
The Stand specially designed to give the 
utmost convenience for manipulation. 
Awarded 28 GOLD and other Medals at the principal International Exhibitions of the World. 
