126 
PROCEEDINGS OF THE ACADEMY OP 
VITACEiE. 
Cissus discolor, altliough far removed frcm tlie source of the mischief, was 
unusually sensitive. The whole plant withered, leaf, tendril, and branch, and 
was almost immediately killed. 
ViTis. A row of foreign grape vines, planted in a prepared border inside of the 
green-house, and trained up the wall and along the rafters, were not in leaf at 
the time. The gas passed directly through their masses of fibrous roots. On stoop- 
ing down, the strong odor of gas was encountered for some distance. This was 
more apparent on taking up handfuls of the fresh earth, which was unmistaka- 
bly foetid. Notwithstanding these facts, the vines vegetated early in the Spring, 
and grew vigorously, although they bore no fruit. As their roots lay directly 
within the gaseous influence, it is reasonable to attribute their preservation to 
their state of inaction at that time. 
PITTOSPORACE^. 
PiTTospoRUM. Large old specimens were considerably injured. They lost 
not only all their foliage, but the young wood. P. Mayii lost its leaves. They 
all recovered slowly. 
SoLLYA heterophylla lost all its foliage — recovered. 
EPACRIDACE^. 
Epackis. The collection embraced many new and rare varieties, some re- 
cently imported. Being in good health, the greater part were in bloom, but 
they were denuded of leaf and flower. Some died ; the majority struggled for 
life through the summer, and finally recovered. This genus was most severely 
injured. 
FRANCOACE^. 
Francoa sonchifolia lost all its foliage — recovered. 
ERICACEAE. 
Erica. They were somewhat slow in manifesting their injuries. No posi- 
tive change was apparent for some days, after which they shed their leaves. 
They have never recovered entirely, and some have died. 
Andromeda lost all the leaves and flowers, and recovered. 
Clethra were bared of every leaf, and had to be cut back ; they recovered 
shortly afterwards. 
Azalea. A large number of fine specimen plants, including about seventy 
hybrid varieties, were upon a latticed table immediately over the leak. They 
lost nearly all their foliage, and dropped their flower buds. A few lingered on 
and died, but the greater part recovered entirely. 
Rhododendron. Numerous large specimens, embracing many hybrids, were 
in difierent parts of the green-house. They did not show any change for some 
days, then gradually dropped their flower buds, and a portion of the foliage. 
They recovered gradually. 
AURANTIACE^. 
LiMONiA, Citrus. These plants were keenly sensitive. Large old specimens, 
growing in tubs on the upper platform, were stripped at once. The stage was 
covered with leaves, and oranges and lemons in all stages of growth, from fruit 
just formed to that fully matured. The tender wood was blackened and killed, 
so that they had to be cut back to the main branches. Attention, and careful 
nursing restored them somewhat, although they are very slow in recovering 
their former vigor. 
RUTACE^. 
Almeidea macropetala lost its foliage, and recovered. 
ZiERiA macrophylla lost all its foliage, was much affected, and recovered but 
slowly. 
[May, 
