/ 
FOR SALE. «-- 
A ZENTMAYER PORTABLE MICROSCOPE, 
; IN PERFECT ORDER, ; 
For 100.00. - - - Catalogue Price, $147.50 
Including THREE OBJECTIVES, 14 in., 4 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. 
CHARACE OF AMERICA. 
The first fascicle of the Second Part of the Characez of America is 
how ready. It contains descriptions of eight species of JVitel/a, as fol- 
lows: Witella opaca, Ag.; obtusa, Allen; montana, Allen; Blankin- 
shipit, Allen; Missouriensis, Allen; flexilis, Ag.; subglomerata, A. Br. ; 
slomer ulifera, 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 
1. es sede EN» 
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 anp A. B. Seymour. 
Numbers 1-80 ready in May. This second edition is prepared in response to ur- 
gent requests, 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. Wil- 
“ams will hereafter be one of their number. His name will appear with the first edi- 
tion also after No. 1 50. Address 
‘ CLARA E. CUMMINGS, 
WELLESLEY COLLEGE, WELLESLEY, MASS. 
- - HERBARIUM FOR SALE..- - 
An extensive general herbarium, consisting of some 8,000-9,000 mounted sheets 
and representing nearly as many species, together with an equal or larger quantity of 
"nmounted material has been placed in my hands for sale. It is in capital order, ex 
Sept for being somewhat disarranged ; is all named, and may be purchased at an ex 
Seedingly low figure. The species represented are perhaps about equally divided 
etween North America and the Old World. A favorable opportunity is here af 
forded for an individual or institution engaged in accumulating a collection. Corre- 
‘spondence is invited, 
N. L. BRITTON, 
COLUMBIA COLLEGE, NEW YORK CITY. 
