THE GEYSERS. 
123 
feet, where it becomes quite cylindrical, and de¬ 
scends vertically to the depth, according to Povel- 
sen and Olafsen, of between fifty and sixty feet. 
Its sides are smooth, and covered with the same 
siliceous incrustation as the basin. It was full 
twenty minutes after the sinking of the water 
from the basin, before I was able to sit down in 
it, or to bear my hands upon it without burning 
myself. At half past two o’clock it was again 
nearly filled, the water having risen gradually, 
but at intervals, attended every now and then 
with a sudden jet, which, however, did not 
throw it more than two or three feet higher than 
the rim of the basin. A few minutes after, there 
was a slight eruption, but the greatest elevation 
to which the water was ejected, was not above 
twelve feet. At four o’clock in the afternoon my 
guide was witness to another, while I was away. 
I had been visiting the other hot springs, and, 
amongst them, that which Sir John Stanley calls 
the Roaring Geyser , in which, though the water 
rose and fell several feet at uncertain intervals, and 
was frequently boiling with a loud and roaring 
noise, I still did not perceive that it ever flowed 
over the margin of the aperture. Its pipe or well 
does not descend perpendicularly, but, after going 
down some way in a sloping direction, seems to 
continue in a nearly horizontal course. Around 
its mouth lies a considerable quantity of red earth. 
