BAUSCH & LOMB OPTICAL CO., 
MANUFACTURERS OF 
Microscopes, Telescopes, 
PHOTOGRAPHIC LENSES, 
And other Optical Instruments. 
ROCHESTER, N. Y.—531-539 North St. Paul St. 
NEW YORK—37 Maiden Lane. 
A catalogue with a number of improvements and additions in the line of 
Microscopes is in press now, and will be sent to any person interested in Mi- 
croscopy free on application. 
BOTANICAL PAPER. 
E. MORRISON, 
PAPER WAREHOUSE, 
No. 805 D Street, Washington, D. €. 
Standard Herbarium Paper, 1124 x 16%, 25 and 30 see at $4.50 and $5.50 per 
Genus Covers, — size (1624 by 24), No. 1, $4.25; No 2, $2.50; No. 3, $2.00 per hundred. 
Also drying p: 
ia ina aE 
AMERICAN 
MONTHLY 
MICROSCOPICAL JOURNAL, 
A periodical for all who use the Microscope, either professionally or as amateurs. 
i hee much pleased with the Journan, and h = 3 
cari Many new things from it, and I am sure that it is the case , with all who read it. 
The eighth volume now current. Subscription price, $1.00. 
Editor, HENRY L. OSBORN, Ph. D., 
Lafayette, Indiana. 
Business Manager, RUFUS W. DEERING, 
630, Washington, D. C. 
