CHARACE OF AMERICA. 
The first fascicle of the Second Part of the Characez of America is 
now ready. It contains descriptions of eight species of JVited/a, as fol- 
lows: Witella opaca, Ag.; obtusa, Allen; montana, Allen; Blankin- 
shipit, Allen; Missouriensis, Alen; flexilis, Ag.; subglomerata, A. Br. ; 
glomerulifera, 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 
a dtu 
10 East 36th St., N. Y- 
MEMOIRS. 
-- FROM THE ... 
Department of Botany of Columbia College. 
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. 
