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 See 
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. 
—— 
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. Ov: WA _ 
cronata. A. Br.; capitellata A. Br.; gracilis (Smith) Ag.' (transilis 
sp. nov.) ; ¢enuissima (Desv.) Coss, et Germ.; pygmaca A. Br.; mi- 
nuta Allen (Maxceana sp. nov.) ; intermedia Ndst.; and Asa Grayana 
Schaffner. Price, $1.00. Part'I. (general) is out of print. A new edi- 
tion will be icagh after the systematic part shall have been completed. 
T. F. ALLEN, : 
10 East 36th St., New York City. 
MEMOIRS 
- FROM THE .. 
Department of Botany of Columbia college ; 
veer ME 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, © 
 COLUMRIA COLLEGE. NEW YORK. ave ' 
