BAUSCH & LOMB OPTICAL 60., 
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. 
BOTA NICAT PAP HE- 
E. MORRISON, 
PAPER WAREHOUSH, 
No. 805 D Street, Washington, D. ¢. 
Standard Herbarium Paper, 1124x1614, 25 and 30 ue at $4.50 and $5.50 per ream 
Genus Covers, standard size (1624 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 Microscope, either professionally or as amateurs 
mation.” 
‘Iam much pleased with the Journat, and h ” 
earn many new things from it, and T 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 ag ce RUFUS W. DEERING, 
=x 630, Washington, Dp. Cc. 
