10 
Dr. Henri van Heurgks Microscope 
FOR HIGH-POWER WORK AND PHOTOMICROGRAPHY, 
W. Watson 
& 
Sons, 
313 High Holborn, 
AS MADE BY W. WATSON & SONS TO THE 
SPECIFICATION OF Dr. VAN HEURCK 
OF ANTWERP. 
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 
LONDON, W.C. 
AND AT 
78 Swanston Street, 
Melbourne, 
Australia. 
E STA B. 
1 837 . 
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. 
As Pigured (but without Center- 
ing Screws or Divisions to 
with 1 Eye-piece .. £18 10s. 
made with Continental form 
of loot £18 
Without Rack work to Draw-tube £16 
Awarded 28 GOLD and other Medals at the principal International Exhibitions of the World. 
