DISSECTING MICROSCOPES 
of every size, style and price, suited 
for all kinds of wor 
A new series of lenses 
for dissecting work have 
recently been perfected by 
us which have unusually 
long working distance and 
large flat field. These 
Lens Holder for Anatomical Work. lenses are offered at 
prices less than any lenses of equal quality heretofore 
in use. The new Dissecting Stands are all nickeled 
metal with glass stage. %@- Catalog free. 
Sample copy JOURNAL OF APPLIED MiCROSCOPY on request. 
BAUSCH & LOMB OPTICAL co. 
NEW YORK OFFICE CAGO OFFICE: 
25th Street and mieri, ROCHESTER, N. Y. State a Washington Streets, 
Townsend Bidg. Stewart Bldg. 
CAMBRIDGE BOTANICAL SUPPLY COMPANY 
1286 Massachusetts Avenue =- = = =- = Opposite College Library, 
CAMBRIDGE, MASS. 
COLLECTING BOXES. DRIERS. MOUNTING PAPER. 
PLANT MATERIAL FOR LABORATORY CLASSE 
BOOKS (32-page catalogue). BIBLIOGRAPHY OF aeania BOTANY. 
CONSULTING LIBRARIES. COPYING. MICROSCOPES AND SUPPLIES. 
NEW CATALOGUE, 1899 
EVERYTHING USEFUL TO BOTANISTS. 
JOURNAL OF MORPHOLOGY. 
sages = C. Q; wo Head-Professor of Zodlogy, University of Chicago. 
n 8vo. Three numbers a volume of 100 to 150 pages each, with from 
nape ten double ‘ithomraphic plates. Subscription price, $9.00 per volume ; 
$3-50. 
ees 
single copy, 
ZOOLOGICAL BULLETIN. 
Under the editorial merase of Professors C. O. WHITMAN and W. M. WHEELER, 
assisted b mber of collaborators. Subscription price, $3.00 per Ear 
of $ six samba: single numbers, wigs 5 cents each. 
GINN & COM PANY, PUBLISHERS, 
9-13 TREMONT PLACE, BOSTON. 
