Yet here and there were a few jets of steam from hot springs.
"At the approach of an eruption these jets would redouble their activity, but disappear altogether during the period of the eruption.
In fact, this time had scarcely elapsed before the black points emerged at a little distance, and two jets of air mingled with vapor were noiselessly shot forth.
The cut ends were smashed so that they could not be crammed down over the tapering jets; but we could use our metal-saws for cleaner severances at the other ends.
Those great jets of emotion were a necessary part of his life; he himself had said to the people long ago, "Without preaching I cannot live." But it was a life that shattered him.
This is accomplished in the turbine steam-engine by causing the steam to play in strong jets continuously and steadily upon vanes which form virtually a number of small windmills.
Here and there I could see puffs and jets of steam curling up into the air, called in Icelandic 'reykir,' issuing from thermal springs, and indicating by their motion the volcanic energy underneath.