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, 11% x 1644, 25 and 30 Ibs., at $4.50 and $5.50 per ream. 
genus Covers, standard size (1644 by 24), No. 1, $4.25; No. 2, $2.50; No. 3, $2.00 per hundred. 
AMERICAN 
MONTHLY 
MICROSCOPICAL JOURNAL, 
A periodical for all who use the Microscope, either professionally or as amateurs. 
‘Lam much pleased with the JOURNAL, and have reccived much valuable information.” 
“I learn many new things from it, and I am sure that it is the ease with all who read it.’ 
The eighth volume now current. Subseription price, $1.00. 
Editor, HENRY L. OSBORN, Ph. D., 
Lafayette, Indiana, 
Business Manager, RUFUS W. DEERING, 
Box 630, Washington, D. C. 
