DISSECT! NG MICROSCOPES 
of every size, style and price, suited 
for all kinds of work 
A new series of lenses 
for dissecting work have 
recently been perfected by 
us which have unusuaiiy 
long working distance and 
Å" large flat field. These 
Lens Holder for Anatomical Work. lenses are offered at 
prices less than any ienses of equal quality heretofore 
in use. The new Dissecting Stands are all nickeled 
metal with glass stage. 8” Catalog free. 
Sample copy JOURNAL OF APPLIED MICROSCOPY on request. 
BAUSCH & LOMB OPTICAL CO. 
NEW YORK OFFICE CHICAGO OFFICE: 
25th Street and Broadway, ROCHESTER, N. Y. State and Washington Streets, 
Townsend Bidg. Stewart Bldg. 
PUBLICATIONS OF THE UNIVERSITY OF PENNSYLVANIA 
SYLLABUS OF LECTURES ON THE 
VERTEBRATA. 
By the late Proressor E. D. COPE. 
With Introduction by HENRY FAIRFIELD OSBORN, Sc.D, 
8vo. Cloth, $1.25; paper, $1.00. 
BOSTON, GINN & COMPANY, AGENTS 
IMPORTANT PERIODICAL PUBLICATIONS 
JOURNAL OF MORPHOLOGY. i 
Edited by C. O. WHITMAN, Head-Professor of Zodlogy, University of Chicaga , 
nite wn 8vo. Three numbers a volume of too to 150 pages each, with from 
e to ten double lithographic plates. a price, $9.00 per volume 
ade copy, $3.50 ; 
ZOOLOGICAL BULLETIN. 
e = editorial direction of Aber C. O. WHITMAN and W. M.W HEELER, 
ted by a number of collaborators. a price, $3. 00 per ae | a 
"3 te numbers ; single numbers, i 5 cents eac 
GINN & COMPANY, PUBLISHERS, a 
9-13 TREMONT PLACE, BOSTON. f 
