BAUSGH & LOMB OPTICAL 6O., 
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. : 
BOTANITOAL PAPEHRB. 
E. MORRISON, 
PAPER WAREHOUSE, 
No. 805 D Street, Washington, D. €. 
Standard Herbarium Paper, 1134x 16%4, 25 and 30 Ibs., at $4.50 and $5.50 per ream. 
venus Covers, standard size (16% by 24), No.1, $4.25; No. 2, $2.50; No. 3, $2.00 per hundred. 
Also drying paper. 
AMERICAN 
MONTHLY 
MICROSCOPICAL JOURNAL, 
A periodical for all who use the Microseope, either professionally or as amateurs. 
‘Lam much pleased with the JOURNAL, and haye reccived much valuable information.” 
“Tiearn many new things from it, and I am sure that it is the ease 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, 
Box 630, Washington, D. C- 
