FOR SALE.«-:: 
A ZENTMAYER PORTABLE MICROSCOPE, 
IN PERFECT ORDER, 
For $100.00. - - - Catalogue Price, $147.50 
Including THREE OBJECTIVES, 13 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. 
ee 
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 /Vite//a, as fol- 
lows: Vitella opaca, Ag.; obtusa, Allen; montana, Allen ; Blankin- 
shipii, Allen; Mfissouriensis, Allen; flexilis, Ag.; subglomerata, A. Br. ; 
glomerulifera, A. Br., with fourteen full-page illustrations (eight Jitho- 
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 
yt Mya Sa ALLEN, 
10 East 36th St., N. ¥- 
LICHENES BOREALI AMERICANZ. 
Second edition of Decades of N. Am. Lichens. 
PREPARED BY 
Ciara E. Cummincs, Tuos. A. Wittiams AND A. B. SEYMOUR. 
Numbers 1-80 ready in May. This second edition is prepared in response to ur- 
gent requésts, the subscription list of the first being full. The second will contain 
nothing not in the first. The editors are glad to announce that Prof. Thos. A. edit 
liams will hereafter be one of their number. His name will appear with the first 
tion also after No, 150. Address 
CLARA E. CUMMINGS, 
____' WELLESLEY COLLEGE, WELLESLEY, MASS 
THE BOTANICAL DEPARTMENT, 
IOWA AGRICULTURAL COLLEGE, 
— HAS SOME— 
Duplicate Botanical Works — 
For Sale or Exchange. | 
d 
Bentham & Hooker, Genera Plantarum; LeMaout an 
Decaisne, Descriptive and Analytical Botany, Etc. 
iL. EX. PA 
