132 
the coming meeting in New York, in August, and it was resolved 
_to invite the members of the Botanical Section of the Academy 
of Natural Sciences of Philadelphia to participate in the excur- 
sion to Tom’s River, N. J, May 28th to 30th. 
Mrs. Britton exhibited specimens of Asplenium dentatum, A. 
myriophyllum, and A. rhizophyllum, var. Biscaynianum, collected 
in Florida by Mr. Isaac Holden, and distributed specimens of 
Buxbaumia aphylla, collected by Dr. Chapin at Springfield, Mass. 
Mr. E. E. Sterns read a paper on ‘Some Abnormal Forms of 
_ Saxifraga Virginiensts,’ and exhibited a large number of other 
fresh plants in flower. 
Dr. N. L. Britton described the flowers of Populus hetero- 
phylta and distributed staminate and pistillate catkins. 
PROCEEDINGS OF THE HISTOLOGIC AND CRYPTOGAMIC SEC- 
TION, April 26th.—Miss E. Robertson exhibited some slides of the 
leaf and root of Sparganium showing stellate parenchyma in the 
leaf; also cross-sections of the stem of Galium asprellum with col- 
lenchyma on the angles, each angle terminating in a single-hooked 
cell. Mr. Northrop showed sections of the wood from the plu- 
mose growth of Zaxrodium distichum exhibited at the last meet- 
ing. 
Two slides showing water-pores of strawberry and Cyclamen 
were exhibited from Mrs. Winthrop Cowdin’s collection. 
May 24th. J. Il. Northrop exhibited sporidia of Gymnospo- 
rangium macropus, and specimens of Hydrodictyon and Nitella 
from Clove Lake brook, Staten Island, collected May 2d. 
Miss Jarrett examined pollens found floating in green masses 
from the same locality. Mrs. Britton showed active antherozoids 
of Aulacomnion palustre, each in most violent motion within the 
walls of their mother-cells, yet none of them were found free, | 
though many of the cell-walls were torn so that there remained 
less than one-half of their circumference. Mr. Edgar J. Wright 
exhibited photo-micrographs of Diatoms and Desmids, pollens, 
wood-sections and pine-needles, and distributed some of them to 
the members present. e 
