221 
noted in the BULLETIN, xii., 94. The lithological characters of 
the rock are very similar, and the neighboring plants are the same. 
In the first of these localities, at a height of about 150 feet above 
the sea, on an area of open rock, of about 70 feet by 50, are a 
dozen or more patches of the plant. The second locality is about 
a fourth of a mile further N. W., at a height of perhaps 200 feet. 
Here is a large patch about 10 feet in length and 5 in breadth, 
and four or five smaller ones in close proximity. As might be 
expected in these rocky localities, there is never a large area of 
continuous growth, for it is only here and there that there is suf- 
ficient soil for foothold. During the last three summers a very 
large extent of the open rocky hills of the southern part of Mt. 
Desert has been carefully explored by myself and others, but the 
search has revealed only the five localities mentioned in this and 
a former paper. : 
3. DEER ISLAND. This is the largest island in Penobscot 
Bay, being about eight miles in length, with its greatest breadth 
about five miles. It nowhere reaches great elevation, and is 
separated from the more lofty Isle au Haut, to the south of ‘it, 
by a channel of six miles in width, thickly strewn with islets. 
At the southern end of it is Green’s Landing, where the steamer 
from Rockland to Bar Harbor makes regular stops. Mr. Chas. 
S. Wilder, of Florence, Mass., reports that “ not far from Green’s 
Landing, on the right of the road leading to North West Harbor, 
on a rocky eminence in a small pasture, the Corema is found in 
abundance. Many blueberry bushes are in the vicinity, and no 
pines.” Iam indebted to Mrs. Flora E. Haines, of Bangor, for 
this information. : : 
4. Mr. BEATTIE, CAMDEN, ME. From Mrs. Haines I 
also learn that Miss Fanny T. Hardy, of Brewer, Maine, found 
the Corema on the “east side of Mt. Beattie, on the right at the 
top of the trail, about a quarter of a mile from the edge.” This 
confirms the information given by Prof. Chickering in Bulletin 
of Torrey Club, xi., 116. 
Union of an Oak with a Birch. 
Along the turnpike road on Staten Island, on the property 
known as the Cebra Homestead, there are two trees that have 
grown together in such a way that they would ordinarily be 
