10 
Dr. Henri van Heurcks Microscope 
FOR HIGH-POWER WORK AND PHOTOMICROGRAPHY, 
W. Watson 
& 
Sons, 
313 High Holborn, 
LONDON, W.c. 
IAND AT 
78 Swanston Street, 
Melbourne, 
Australia. 
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. 
As Pigured (but without Center- 
ing Screws or Divisions to 
age), with 1 Eye-piece .. £18 10s. 
made with Continental form 
of loot £18 
Without Eackwork to Draw-tube £16 
Full description of the 
above instrument, and 
Illustrated Catalogue of 
Microscopes and Appa- 
ratus, also classified 
list of 40,000 Micro- 
O bj e cts for- 
post free on 
application to 
ESTAB. 
1 837 . 
l warded 28 GOLD and other Medals at the principal International; Exhibitions of the World. 
