For Poisoning Herbarium Specimens, 
Air-Tight Cases for Carbon Bisulphide Poisoning 
or for Permanent Use, 
' A NEW PATTERN, CAPACITY 2000 SHEETS. 
Price, $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 AL- 
WAYS ON HAND. INSTRUMENTS ORDERED IN NEW 
YORK CITY SENT ON APPROVAL. 
DISCOUNT TO COLLEGES. 
ae 
CHARACEAE OF AMERICA. 
The third fascicle of the Second (systematic) part of the Characeae 
of America is ready. It contains descriptions and etchings of the follow- 
ing, to continue previous descriptions: JVitella Leibergi sp. nov. ; mu- 
cronata A. Br.; capitellata A. Br.; gracilis (Smith) Ag. (¢ransilis 
sp. nov.) ; ¢enuissima (Desv.) Coss. et Germ.; pygmaea A. Br.; mt- 
nuta Allen (Afaxceana sp. nov.) ; intermedia Ndst.; and Asa Grayana 
Schaffner. Price, $1.00. Part I. (general) is out of print. A new edi- 
tion will be prepared after the systematic part shall have been completed. 
T. F. ALLEN, 
10 Hast 36th St., New York City. 
MEMOIRS - 
+ FROM THE ... 
Department of Botany of Columbia College. 
VOLUME 1, 
A Monograph of the North American Species of the Genus 
Polygonum. By Dr. John K. Small. Quarto, pp. 178, 85 plates. 
Price, $6.00. For copies address, 
PROF. N. L. BRITTON, 
COLUMBIA COLLEGE, NEW YORK CITY. 
