118 
on high land, not near the water, and a mile from the first. On a 
third visit to the marsh, late on a cool afternoon, I found still another 
specimen, though not very near the first. 
All the trees seem to be the common red oak {Querctis ruhra)\ 
those in the marsh are not more than ten or twelve feet high, and are 
bushes in shape, with branches to the ground. The upland specimen 
is a tree twenty-five to thirty feet high. None of the oak-trees about 
them has any odor whatever, and, while the latter seem to be com- 
paratively free from the attacks of insects, the former are so eaten 
that it is difficult to find perfect leaves. The only exceptions to this 
are the young red leaves at the ends of the branches; they are all 
perfect and have no odor until dried for twenty- four hours, when 
they develop it as strongly as the mature green leaves. All lose their 
odor when pressed, but retain it for a week or more when simply 
dried. The leaves of the upland tree were sweet when last seen, 
September 22nd. The others were probably so too, but I did not see 
them. I have examined all the oak-trees I have met with since find- 
ing the above, but have discovered no more sweet ones. If one is 
not attracted by the strong arbutus perfume when passing near the 
tree, it seems to be" useless to examine it further. 
These trees ap])ear to reverse the rule with sweet-leaved plants, 
which generally have to be crushed or dried to develop their full fra- 
grance. For instance, one can walk through a plantation of bay- 
berry and hardly perceive any odor, though v/hen crushed or dried 
the leaves are very sweet and finally acquire the exact smell of tea. 
These oak-leaves, on the contrary, attract the attention of the passer- 
by, are not improved by crushing, and, with the exception of the 
young leaves mentioned, do not gain more fragrance in drying. 
Boston, Oct. 22nd, 1884. Bell F. Hapgood. 
Subulariaaquatica.— In September, 1882, I found one specimen 
of this rare little plant on the gravelly margin of Echo Lake, Franco- 
nia, and quite out of water. I made a note of it in the Bulletin 
for March '83, I afterwards received several letters from botanists 
in regard to the plant, and was told that no record had been printed 
of its being found at Echo Lake since Tuckerman's discovery m 
1844. In September '83 I again visited the station, and was so for- 
tunate as to, find several specimens in the same locality, all out of 
water and quite small. My information concerning the plant was 
derived from Gray's Manual, which gives its habitat "margin of 
lakes.*' I did not therefore search for it under water, and other 
botanists who visited the place made the same mistake. But this 
year I, with others, have made further investigations, with satisfactory 
results. It is found in great quantities on the gravelly bottom of the 
lake, in from one to four feet of water, and probably at a greater 
depth. In this situation it is much more luxuriant, sometimes fuhy 
9 inches in height, and grows in thick, close mats, twenty ^^y^^)}'! 
feet in extent. On consulting Tuckerman's original article K^^^^j^^ 
mans Journal 
Stibularia 
water.'' I 
^nat^ 2a series, vl, 1040; x imu iiiat uc lucit: aj^^c*..*- - 
as submersed, " growing abundantly in about a f^^^^ 
n Gray's Genera, 1848, it is described as '* growing on tne 
