11 
as sufficient to establish it as a permanent immigrant. If you 
will kindly indicate the other places where observed in Nova 
Scotia, I shall be glad to visit them, and report whether the plant 
appears to be taking hold. I have a specimen from Newfound- 
land. It would be an additional favor if minute details were 
given of the Nova Scotia locality for the exceptionally rare 
Schizea pusilla, which we are anxious to find. Grand Lake, as 
its name implies, is a very large lake, but my summer residence 
is within walking distance of the civilized end of it, so that it 
would be quite easy for me to visit any part of its shores. 
The notices of Erica cinerea and Calluna on Nantucket are 
very interesting. A case has occurred here of the artificial intro- 
duction of Cad/una, within the last few years, in a manner some- 
what similar to that indicated for the Evica cinerea on Nan- 
tucket. My friend Mr. P. Jack had a collection of native ferns 
sent from the Island of Arran, on the west coast of Scotland, . 
which he planted on his property of Bellahill, near Halifax, 
in a wild, shaded, moist situation, in the immediate vicinity of 
which were patches of black bog earth. A few years ago, sub- 
sequent to the planting of the ferns, he observed springing up 
two young healthy plants of Cal/una vulgaris. They had germ- 
inated in the black earth at the side of a path, and are now grow- 
ing vigorously, and promise to establish a permanent patch; but 
they have not yet flowered. The facts detailed by Mr. Willis, 
and the one just mentioned, show that Erica and Calluna may 
both be introduced in the soil attached to the roots of imported 
trees or plants. I would like, however, to add that this in 
nowise invalidates the belief ‘of many of us that Cad/una is an 
indigenous American plant. It apparently belongs to the class 
of American plants, now not small, which are both ‘ indigenous 
and introduced.” The facts have been pretty fully printed, and 
I shall be glad to send a copy of my paper, published some 
years ago, to any botanical student who may desire to look,into 
them. The Cad//una, like Corema, is apparently one of the rem- 
nants of a lost Atlantic Flora. 
With reference to a previous notice of Corema Conradii, it may 
be mentioned that I observed immense quantities of it this sea- 
son growing, in a perfectly gregarious, heath-like manner, in the © 
