BOTANICAL SUPPLIES. 
I have ordered Gray Herbarium Standard 
Mounting Paper in EXTRA HEAVY weight 
for World’s Fair use, same weight that I make 
for Messrs. Pringle and Peck. 
The usual weight can be supplied now or to 
special advantage in early spring. Also Genus 
Covers, Driers, all kinds of botanical paper, 
and anything needed by botanists. 
I am planning to ship paper about March 1, 
prepaid to New York and Chicago, for all who 
request it. 
A. Bs SEH YMOUR, 
Cambridge, Mass, 
~The North American Pyrenomycetes. 
By J. B. ELLIS and B. M. EVERHART. 
With original illustrations by F. W. ANDERSON. 2,500 species of the 
old genus **Sphieria,” described and arranged in accordance with the 
modern ideas of classification. One thick octavo volume, with over 800 
pages of printed matter and 41 full-page tinted plates illustrating the 
genera ; bound in fine cloth, with stamped covers and gilt-lettered back. 
Price, $8,00, with 35 cts..additional if sent by mail. Address, 
J. B. ELLIS, Newfield, N. J. 
Sets of Potamogeton. 
A few sets of Potamogeton are in the course of preparation 
which are offered for sale to botanists who are in want of authen- 
tic species named by the subscriber. The sets will include nearly 
all the North American and many European species, together 
with a few species of Naias. The price will range from $3.00 to 
$5.00, according to their completeness. 
THOMAS MORONG, — 
Columbia College, New York City. — 
