f GUPPY— DOMINICA. 
383 
^minutes in raising and falling. It seems to have been in 
‘'the rivers that the most damage was done by this earth- 
quake wave. It rushed up them like a bore, upsetting 
and filling boats and canoes, and overflowing the low 
banks. At this time I was of course unaware of the great 
earthquake at St. Thomas, but the news reached me nine 
days afterwards, and it was not difficult to see the connec- 
tion between the phenomena. 
JDr. Imray was kind enough to take me on my journey 
in his boat as far as his estate at Batalie. On the way we 
observed the volcanic strata exposed in the sea-cliffs, the 
most noticeable of which is a great outflow of trachyte 
lava at Grand Savana. We did not land, but so far as we 
could judge from the boat, this lava outflow must have 
belonged to the newer volcanic series, for it overlay and 
filled up the hollows of the conglomerate. We also no- 
ticed along the cliffs the traces of several former sea-levels, 
the most distinct of which is only about five feet above the 
present high water mark. Another feature of the shores 
is the caves, apparently worn out by the sea ; one orf these 
is remarkable for the spouting of the water out of it to 
some height. This cave is said to run under the Island 
to Lasoye Bay, a distance of several miles. 
At Batalie, Dr. Imray has a lime-tree estate. The limes 
are cultivated, and their juice expressed and boiled down 
for export. In the stream running through Dr. Imray’s 
estate, I found a Neritina in great abundance ; yet the 
corrosive action of the water, charged with acids, and 
derived from strata having but little lime in their compo- 
sition, is so great, that these shells had always lost their 
spires, and indeed the last whorl was often encroached 
upon, and it must have been by some physiological effort 
that the mollusks kept a coating of calcareous matter on 
