FOR SALE.«-:- 
h ZENTMAVER PORTABLE. MICROSCOPE, 
IN PERFECT ORDER, 
For $100.00. - - - Catalogue Price, $147.50 
Including THREE OBJECTIVES, 14 in., } in., and } in. 
Also an Abbé Condenser, Glass Stage, and Neat Walnut Case. 
Address the Editors of the Bulletin or Wm. Wales Fort Lee N. J. 
CHARACEA: OF AMERICA. 
The first fascicle of the Second Part of the Characeze of America 1s 
now ready. It contains descriptions of eight species of Mite//a, as fol- 
lows: JVitella opaca, Ag. ; obtusa, Allen; montana, Allen; Blankin- 
shipit, Allen; Missouriensis, Allen; flexilis, A g.; subglomerata, A. Br. 3 
slomerulifera, A. Br., with fourteen full-page illustrations (ight 
graphic plates and six photogravures). These fascicles will be me 
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 
TE. ALLEN, 
10 East 36th St., N. Y- 
LICHENES BOREALI AMERICANI. 
Second edition of Decades of N. Am. Lichens. 
PREPARED BY 
Ciara E. Cummines, Tuos. A. WiLLiAMS AND A. B. SEYMOUR. 
Numbers 1-80 ready in May. _ This second edition is prepared in se ah ath 
gent requests, the subscription list of the first being full. The second wi 0. Wil 
nothing not in the first. The editors are glad to announce that Prof. ig t edi- 
liams will hereafter be one of their number. His name will appear with the firs 
tion also after No, 150. Address 
CLARA E. CUMMINGS, 
WELLESLEY COLLEGE, WELLESLEY, MASS. 
Oswald WEIGEL, BOOKSELLER, 
LEIPZIG, KONIGSTRASSE 1, GERMANY. 
SPECIAL DEALER in works on BOTANY and Natural Science. ahah 
Large Stock of SECOND HAND Books. CATALOGUES Free on Applica 
Recently published : 
‘oa oecono- 
New Series, Cat. No. 62.—Anatomia et physiologia plantarum. Botanica 
mica et hortensis. Plante officinales, 
aner- 
New Series, Cat. No. 63.—Annales et Acta. Scripta miscellanea. Flore. Ph 
ogame. 
New Series, Cat. No. 64.—Cryptogame. 
(From the libraries: F. von Herder, T. Lange, A. v. Bunge, K. v. Prantl, ete.) 
New Books and Periodicals Supplied at Reasonable Terms. ; 
PR rae 
