

NEW CATALOG MICROTOMES 
Containing full descriptions 
and Photographic Illustrations 
of our entire line of remodeled 
microtomes and accessories, 
including several 
NEW MICROTOMES 
This new series is the most 
complete and practical ever _ 
listed, and every user of a- 
Microtome should have a 
copy of the book for refer- 
ence purposes, if for no 
other reason. Mailed free. 
Bausch & Lomb Optical Co. 
New York ROCHESTER, N. Y. Chicago 








* 
BOOKS ON SCIENCE 
Bergen’s Foundations of Botany E . cuc. m qu eu $1.50 
Davis' Physical Geography i 14.25 — 
Moore’ s Laboratory Directions ta Beginners ir s Bacteriology : 1.00 i 
| Physiology = 2 


