For Poisoning Herbarium Specimens, 
Air-Tight Cases for Carbon Bisulphide Poisoning 
or for Permanent Use. 
A NEW PATTERN, CAPACITY 2000 SHEETS. 
PrickE, $15.00. 
Another Form, Single Pigeon Holes, 85 Cents Each. 
Cambridge Botanical Supply Co. | 
—~*> EVERYTHING USEFUL TO BOTANISTS <“— 
WILLIAM WALES, Fort Lee, N. J., 
MANUFACTURER OF 
FIRST-CLASS MICROSCOPE OBJECTIVES. 
MICROSCOPES FURNISHED OF ALL MAKES—ZENTMAYER’S AIL- 
WAYS ON HAND. INSTRUMENTS ORDERED IN NEW 
YORK CITY SENT ON APPROVAL. 
DISCOUNT TO COLLEGES. 
CHARACE OF AMERICA. 
The first fascicle of the Second Part of the Characeze of America is a 
now ready. It contains descriptions of eight species of Mife//a, as fol- 
lows: JVitella opaca, Ag.; obtusa, Allen; montana, Allen; Blankin- 
shipti, Allen ; Missouriensis, Allen; flexilis, Ag.; subglomerata, A. Br. ; 
Slomerulifera, A, Br., with fourteen full-page illustrations (eight litho- 
graphic plates and six photogravures). ‘These fascicles will be issued 
from time to time as plates can be prepared; price of each part $1, the 
actual cost, if the whole edition of 500 copies be sold. Address 
LD. E. ALLEN, 
10 East 36th St., N. Y- 
et 
least 
-« FROM THE ... 
Department of Botany of Columbia College. 
VOLUME 1. 
A Monograph of the North American Species of the Genus 
Polygonum. Quarto, pp. 178, 85 plates. Price, $6.00. 
For copies address, . 
PROF. N. L. BRITTON, ¥ 
_ COLUMBIA COLLEGE, NEW YORK CITY. 
