For High Power Work 
Microscope KD 8, $114.00 
Equipped with achromatic i6 and 
4 mm. dry and 1.9 mm. oil immer- 
sion objectives, 5x and lox paired 
eyepieces and Abbe condenser, 
1.20 N. A. 
Bausch & Lomb 
Binocular Microscope KD 
Satisfies every requirement for per- 
fect binocular vision. 
BriUiant field. 
Freedom from eye-strain. 
Tubes inclined so both point 
toward specimen. 
This angle of inclination is the nor- 
mal angle of convergence of eyes 
for a lo-inch image distance. 
Graduated adjustment compen- 
sates for differences in vision be- 
tween observer's eyes. 
These features, making for per- 
fect binocular vision, give 
True stereoscope effect — the deep 
perspective gives a true, three- 
dimensional image. 
The instrument takes achromatic 
and apochromatic objectives. It 
has side fine adjustment with two 
heads and workmanship and equip- 
ment are of the highest grade. 
Write for circular 
BAUSCH & LOMB OPTICAL CO- 
St. Paul Street ROCHESTER, N. Y. 
NEW YORK WASHINGTON CHICAGO SAN FRANCISCO 
Awarded Grand ^rix for Microscopes at 
Manama-Pacific Exposition 
Always mention the JOURNAL OF BOTANY when answering our advertisements. 
