100 
students of that College. Dr. Post was formerly one of the fraternity 
in this city, and was the first to detect Frangula in the Hackensack 
marshes. 
§ 104. New Localities. We found this spring another spot 
where Viola rotundifolia, Mchx., grows in this neighborhood, in 
the wood back of Tenafly, not far from the river front of the 
Palisades. This is a southern outpost of Mr. Austin’s Closter 
locality, (BuLLETIN, I. 38.) It was found years ago on the banks 
of the Harlem River, Morrisania, and later on the banks of the 
Whippany, N. J. These seem its southern limits on the coast. 
Ranunculus Cymbalaria, Pursh, grows in the overflowed flats back of 
the third landing on Rockaway Beach. Melilotus officinalis, Willd., 
begins to show itself on the railroad near Carmansville. Mr. 
Wilber reports Sisymbrium Alliaria, Koch, abundant near Irving- 
ton. Malva parvifiora, L., was found in October, 1874, by Mr. 
David F. Day at Wellsboro, Pa., thoroughly established in’ road- 
sides, gardens and waste places. Rev. Hermann Wibbe found a 
year ago near Nassau Village, Rensselaer Co., N. Y., Azalea vis- 
cosa, L., but this has been found further north and west, vid. Payne’s 
Cat. Near the same village Mr. Wibbe found Gypsophila muralis, L., 
quite naturalized in middle of the road, and in dry barren places 
in the adjacent fields; also in the streets of Oswego. This is 
cultivated for borders, from which it has escaped. Mrs. L. A. 
Millington found a year ago on the western shore of Lake Cham- 
plain Betonica grandiflora, Spreng. There were two or three 
scattered tufts growing in the sandy hollows along the rocks of a 
lonely bay, evidently floated there at high water. ‘They had only 
a few flowers at the top of the stalk instead of the abundance in 
—— plants. They were incompany with Germander (Teucrium), 
otentilla Anserina, L., and Ranunculus multifidus, Pursh, seemed 
thoroughly at home and likely to thrive. Mrs. M. adds that 7}a- 
gopogon pratense, L,, is thoroughly naturalized about Glens Falls. 
Mr. W. W. Bailey, of Providence, R. IL, says that Hgopodium 
podagraria, L., which according to Darlington is a nuisance in some 
parts of Pennsylvania, has grown for a long time on the back 
_campus . Brown oe where he first found it in 1863. It 
seems to be completely naturalized, and to be slow] i 
Pa Bitzer th, 28; Ege i. sircoat a 
§ 105. The Oaks of the United States—This is a title of a paper 
read before the Academy of Science of St. Louis, March 20 by Dr 
Geo. Englemann. It is not a description of the species but a 
classification of them, with a general account of the characters use. 
ful for this purpose, and of the synonyms. The White-oaks are 
distinguished from the Black by the color of the bark and the 
tougher, heavier, and more compact wood. The wood of the Black- 
oaks is brittle and porous, makes poorer firewood, and, made into 
barrels, holds only dry substances. In them the scales of the acorn- 
cup are never thickened at the base. The annual rings show that 
the Oak grows as rapidly in age as in youth, or even more rapidly. 
The winter-buds, the vernation and venation of the leaves, and the 
presence (chiefly on the young leaves) of articulated hairs of several 
