$72 BOTANICAL GAZETTE [JUNE 
Aster novae-angliae and Solidago serotina were the principle species under 
examination. Several figures show that a tetrad of four megaspores is formed, 
as would have been expected. In regard to later stages, Patm disagrees with 
the results of the reviewer” and the subsequent study of Miss OPPERMAN,” for 
he claims that the extensive development in the antipodal region is due to the 
growth of the lower megaspores of the tetrad. His series is far from complete, 
however, and his figures, interpreted in this way, do not show any antipodal 
cells. While my own series, published more than 20 years ago, was incom- 
plete, and Miss OPPERMAN’s lacked stages in the early development, I see no 
reason why either of us should change our view that the chalazal development 
results from the enlargement of one or more of the antipodal cells. To prove 
his claim, Patm should present figures of the $-nucleate stage of the sac, fol- 
lowed by a close series showing the disappearance of the antipodal cells or 
nuclei. Since such rele are a we prefer to ct tpi the enlarged cells 
in the chalazal region as anti dnot asf t megaspores. CHARLES 
J. CHAMBERLAIN. 
The vegetation of Connecticut.—Continuing the studies previously noted,” 
NICHOLS” in a fourth paper has considered the vegetation of the swamps and 
bogs of Connecticut. The latter presents the more interesting group of plant 
associations, conspicuous among which is the bog forest of bene mariana and 
P. rubra, occasionally supplemented by Pyrus americana g a remark- 
e aggregation of northern trees. These ses: topetiie with shrubs and 
herbs of northern affinities, lead the author to a consideration of the much dis- 
cussed question of the origin of bog vegetation, resulting in the opinion that 
the vegetation is that of a relic swamp type, representing the vestigial remnants 
of a more northern type of flora which dominated the region within a geological 
time decidedly more recent than the Pleistocene. 
In a similar connection it is interesting to note that in the fifth paper atten- 
tion is directed to the fact that the rock ravine is second only to the bog for 
its display of northern species. This paper gives a careful survey of the plant 
communities associated with stream erosion and deposition. None of the 
associations are of striking interest, but it serves to round out a comprehensive 
study of the vegetation of the state——Gro. D. FuLLER. 
id vgprinatde “a 2 The embryo sac of Ade novae-angliae. Bot, GAz. 20: 
205-212. pls. 15, 16. 
18 OPPERMAN, ty A contribution to the life history of Asfer. Bot. Gaz. 
372 353-362. pls. 14, 15. 1914. 
” Bot. Gaz. 59:159-160. IgI5. 
20 NERO, G. es pane vegetation “ Connecticut. IV. Plant societies of the low- 
lands. V. Bull. Torr. Bot. Club 42:169-217- 
Sigs. 15. 1915; 43:235-264. hes. II. 1916. 
