10 
We enumerate below a few special articles 
recently introduced by Zeiss : — 
STANDS A and B, fitted with Meyer Toothed 
Wheel Slow Motion. 
Binocular Eyepiece “ Bitumi.” 
Improved Paraboloid Condenser for bright and 
dark field illumination. Skin Microscope. 
Double Eyepiece for demonstration purposes. 
Comparison Eyepiece. 
Full particulars on application. 
Distributors : 
J. W. ATHA & Co. 
The “Bitumi” Binocular Attach- 
ment on the New Stand A. 
8 SOUTHAMPTON ROW, 
LONDON, W.C.l 
If you are in need of any second-hand Book on Natural History or Science 
apply to 
DULAU & CO. Ltd., 
Libraries purchased. 
34, 33, 36, Margaret Street, 
Cavendish Square, London, W.1 
MICROSCOPIC STAINS AND SOLUTIONS 
MOUNTING MEDIA 
PURE DYES for all Scientific Purposes 
Price List on application STANDARD QUALITY Telephone : PUTNEY 1463 
Manufactured by 
GEORGE T. GURR 
35 Perrymead Street, Fulham, London, S.W.6 
L 
