138 
THE GEYSERS. 
of which there is a rim or elevated margin, about 
five or six feet in length and one foot high; but 
the ends of this are ragged, as if it had formerly 
been continued the whole way round the crater, 
and it is therefore probably a portion of the same 
wall, which Sir John Stanley describes as nearly 
surrounding the basin at the time he was there, 
and as being two feet high. The well is formed 
by no means with the almost mathematical accu¬ 
racy of that of the Geyser, but is extremely irre¬ 
gular in its figure, and descends in rather a 
sloping direction; its surface being composed 
of a siliceous crust, of a deep greyish brown 
color, worn smooth by the continued friction of 
the water. For several yards, in one direction, 
in the neighbourhood, where the water flows off 
in a shallow stream, the bed of this is composed 
of a thin white covering, of a siliceous deposit. 
During the eruption of the new Geyser, I could 
not perceive that it in any way affected the 
neighbouring springs. I remarked no particular 
sinking of the water in any, nor did I observe 
that any boiled more violently than usual. The 
Geyser, which was filled almost to the rim of 
the basin, previous to the eruption of the new 
Geyser, from which it is distant about four 
hundred yards or more, remained, as nearly as 
possible, in the same state of fulness during, and 
after, the eruption. Sir John Stanley, also, ob- 
