a second time flung out. The stones were
mostly as entire as when they were put in,
but the tufts of grass and earth were shivered
into numerous small black particles, and
were thrown up by the first jet in quick
succession, producing a very pleasing effect
among the white spray. This whole day had
been fine with but little rain.
Saturday, At one o’clock this morning there
July 15‘ was an eruption of the Geyser, which
was repeated at half past three, and again at
a quarter before eight, and at half past nine;
after which, the fountain continued to spout
water about every two hours. All these
eruptions were attended by the same circumstances
as those of yesterday, and were preceded
by similar tremblings of the ground
and subterraneous noises; but none of them
threw the water to any great elevation ; the
highest not appearing to exceed fifty feet.
Close to the edge of many of the hot-springs,
and within a few inches of the boiling water,
in places that are, consequently, always exposed
to a considerable degree of heat,
arising both from the water itself and the
steam, I found Conferva limosa Dillw. in
abundance, forming large dark-green patches,
which easily separated and peeled off from
the coarse white kind of bolus that they were
attached to. In a similar situation, also, I
met with a new species of Conferva (belonging
to the family called by Voucher Oscilla-
toria), of à brick-red color, covering several
inches of ground together, and composed of
extremely minute unbranched filaments, in
which, with the highest powers of my microscope,
I was not able to discover any dissepiments.
The margin of one of the hot-
springs, upon a white bolus, which was in a
state of puddle from its mixture with the
heated water, afforded me the finest specimens
of Jungermannia angulosa * I ever
saw, growing thickly matted in such great
* Mri Barrow,-in his Voyage to Cochin-China, gives
us a very interesting account of the hot-springs in the
island of Amsterdam, which liés in latitude 38° 42' south,
and longitude 76° 51' east. “ Some of them,” he says,
are running freely, Others ooze out in a paste or mud.
In some of the springs Fahrenheit’s thermometer ascended
from 6 2 “ in the open air to 196°; in some to
204°; and in others to 2 1 2 °, or the boiling point. In
several places we observed patches of soft verdure, composed
of a fine delicate moss, blended with a species of
Lycopodium and another of Marchantía. These green
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