*+HER BARIUM FOR SALE. + 
I desire to sell the European part of my herbarium (75 fasc. 
phanerogamia and filices), containing considerably more than 
half the European flora; all species are in good condition and 
represented by abundant specimens from various localities. 
Dr. P TAUBERT, 
S. W. 47 York Str. 58, Berlin, Germany. 
CHARACEZ OF AMERICA. 
The first fascicle of the Second Part of the Characez of America is 
now ready. It contains descriptions of eight species of Witel/a, as fol- 
lows: WVitella opaca, Ag.; obtusa, Allen; montana, Allen; Blankin- 
shipii, Allen; Missouriensis, Aen; 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 
TT. ES. AIL, 
10 East 36th St., N. Y¥. 
American Algae. Century I. 1894. 
The first hundred of a carefully prepared series of American Algae is now offered 
for sale at the uniform price of ten dollars net ($10.00). The edition of Century I. is 
limited to twenty-five. The plants have been determined with great care and have 
been compared with such standard specimens as those of Wittrock and Nordstedt, Go- 
mont, etc. Century I. comprises only freshwater forms from the Upper Mississippi 
Valley. The set is arranged in a handsome quarto volume, with printed labels and 
abundant material for critical ‘study. Microscopic measurements and other details are 
incorporated in the labels. The first Century contains several rare varieties, as for ex- 
ample, Sphaeroplea, a new gigantic species of 7étraspora,a new calcareous Chacto- 
Phora and others. A specially fine series of Cladophora is included, comprising fif- 
teen different species and varieties. It is believed that this, the first set of freshwater 
Algae published in America, wil] prove of value to herbaria that may acquire it, 
JOSEPHINE E. TILDEN, 
University of Minnesota, Minneapo:is, Minn. 
MEMOIRS 
Address orders ‘to 
w» FROM THE ... 
Department of Botany of Columbia College. 
A new series.of papers under this title will be commenced in January, 1895. They 
will be printed in ie 2 and issued as matter becomes available. bi . tha 
contain “A Monograph of the North American Species of the Genus Pol ygont gtd 
Mr. John K. Small, consisting of about 150 pages of text and 86 plates. pri 
of this number is $6.00. The Memoirs will not be sent in exchange. 
Remittances and applications for sample pages may be made to 
PROF. N. L. BRITTON, 
COLUMBIA COLLEGE, NEW YORK CITY. 
