10 
Dr. Henri van Heurcks Microscope 
FOR HIGH-POWER WORK AND PHOTOMICROGRAPHY, 
AS MADE BY W. WATSON & SONS TO THE 
SPECIFICATION OF Dr. VAN HEURCK 
OF ANTWERP. 
Pitted with Pine 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. 
Pine adjustment to Substage. 
The Stand specially designed to give the 
utmost convenience for manipulation. 
As Figured (but without Center- 
ing Screws or Divisions to 
Stage), with 1 Eye-piece .. £18 10s. 
Also made with Continental form 
of loot .. .. £18 
Without Rack work 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- 
scopic Objects for- 
warded post free on 
application to 
W. Watson 
& 
Sons, 
313 High Holborn, 
LONDON', w.c. 
!AND AT 
78 Swanston Street, 
Melbourne, 
Australia. 
Sir- E S T A B 
1 837 . 
Awarded 28 GOLD and other Medals at the principal International Exhibitions of the World. 
