81 
May 24///, Closter, N, J,; nothing of special interest noted. 
May 30//^ to June. 2d, Northern Morris and Sussex Cos,, N, /. 
At Newfoundland, Arenaria lateriflora in quantity, and Ranunculus 
aquatilis, var. trichophyllus were noticed. At Sparta and Morris Pond, a 
charming region was found. A sand-hill near the depot was covered 
with Lupinus perennis. It was noticed that the standard petals of 
lower flowers were dark purple, while those of the upper, later ones 
were of a much lighter color. The same plant was seen from the 
cars at several places west of Newfoundland, forming dense, broad 
patches. Arabis laevigata; Zizia integerrima and Asplenium Ruta- 
muraria were collected in this vicinity, and Viola blanda was found 
in great abundance in the ravine leading to Morris Pond. Dr. Brit- 
ton called attention to the supposition of some botanists that there 
are two species included under this name, /. ^., the larger variety, m 
which the peduncles and sometimes also the petioles are flecked with 
red (r. anuvna, Le Conte.), and the small obtuse-leaved, unspotted 
form, by some considered the type. Both were noticed, but also all 
stages of gradation between them. On the meadows bordering the 
Wallkill River, above Ogdensburg, Geum rivale, Casiilleia coccinea 
and the leaves of Parnassia were seen in abundance ; Rosa blanda 
and Arabis lyrata were found on Stirling Hill, and Viburnum Opuhis 
in the town. At Hamburg, were observed Za/-/x Americana and 
Arabis perfoUata- — the latter new to New Jersey. 
June 6th, Carlstadt, N. /.—Among many plants collected were 
Magnolia glauca, Lysimachia thyrsiflora and, in the ditches, Ana- 
charts in flower.' 
Miss Knight remarked upon the forms of Rhododendron viscosum 
noticed, and showed specimens of varieties nitiduni and glaucum. 
Mr. P. H. Dudley then exhibited and remarked upon a 
series of photo-micrographs of transverse, radial and tangential sec- 
tions of some American timber-trees taken by him with ordinary lamp- 
light. They were enlarged 100 diameters. Among them were ^'^i/^-^/'^ 
sempervirens, in which attention was called to the very large cells- 
none less than one-tenth of an inch in length— and to the fact that in 
this and other conifers examined the pit markings of the cell-walls 
are seen in abundance in only radial sections ; Caialpa specwsa, now 
used for railroad ties in the west ; and Ailanthus glandulosus, m 
which Mr. Dudley had noticed the greatest number of and ^^'^^'^^^ 
ducts in any wood yet examined by him. In Liriodendron the duci^ 
are very numerous but small; in the osage orange the parenchymatou 
tissue within the ducts is plainly noticeable; in the white oak, ches - 
nut and black walnut Mr. Dudley had observed that these paren 
chyma cells in drying, shrink away from the walls of the ducts an^ 
from each other, and then appear as separate vesicles. He 
showed a photograph of a section of a decayed white oak raiiro 
tie with the mycelia of fungi. 
