309 
of these occasional means of dissemination, the impression re- 
mains that any such period as ten thousand years is insufficient 
to account for the northward spread of these slow marching 
forms. * * The fact * * that they extend ina continuous 
line from the Atlantic to Minnesota indicates that the advance 
has been accomplished by causes of a general and continuous 
nature. It thus seems to me that from the distribution of these 
large-seeded trees we are led to the conclusion that any such 
period as ten or even twenty thousand years is totally inadequate 
to account for the changes which have taken place in the distri- 
bution of our forests since the close of the glacial period.” 
A. H, 
Boltonia asteroides. (Meehan’s Month. i. 33, 34; pl. iii). 
Botanical Club of the A. A. A. S. (Bot. Gaz. xvi. 261-264). 
General account of the club meeting, at Washington, Aug. 20, 
21, 22, with titles or abstracts of the papers read. 
Botanical Papers at the Washington Meeting of the A. A. A. S. 
(Bot. Gaz. xvi. 255-261). 
Titles and abstracts of papers read before Sec. F. and Sec. C. 
Botanical Section of the American Association of Agricultural 
Colleges and Experiment Stations. Washington Meeting. 
Geo. F. Atkinson. (Bot. Gaz. xvi. 264-267). 
General account of the meeting, with abstracts of papers and 
remarks. 
Bromeliacee Herbarit Regnelliant. I. Bromelia. C. A. M. 
Lindman. Kong. Svenska Vet. Akad. Handl. xxiv. No. 8, 
pp. 50, 8 plates). 
Description of the species of Bromeliaceze contained in the 
herbarium of A. F. Regnell in the botanical museum at Stock- 
holm. The plants are mainly from Brazil, and furnish new 
species in the genera Midularium, Karatas, Cryptanthus, Ques- 
nelia,. Atchmea, Billbergia, and Ananas, besides the two new 
genera, Wittrockia and Mosenia. Throughout the work the 
original authors of species are cited in parentheses. 
Calypso—The Home of. F. Blanchard. (Bot. Gaz. xvi. 241, 242). 
Description of its occurrence in the cedar swamps of Vermont. 
Carices—New California. Notes on Carex. XV. L.H. Bailey. 
(Reprint, Bull. Calif. Acad. Sci. iii. 104-106). 
