Its course down the cliff was marked by the cracking of limbs.
Cracking under a heavy load.
The cracking and booming of the ice indicate a change of temperature.
Cracking it open, she peered out.
I'd better get cracking on that, knock on doors or something.
The operation was, however, completely revolutionized in the United States by the introduction of the " cracking process," and by the division of the distillation into two parts, one consisting in the removal of the more volatile constituents of the oil, and the other in the distillation (which is usually conducted in separate stills) of the residues from the first distillation, for the production of lubricating oils and paraffin.
Under such conditions, distillation takes place at higher temperatures than the normal boiling-points of the constituent hydrocarbons of the oil, and a partial cracking results.
At last the men mounted, and, as they say in the old songs, away went the steeds with bridles ringing and whips cracking and hounds racing ahead, and away went the champion hunters "with hark and whoop and wild halloo!"
After a slight hesitation the door burst open with a cracking blow.
Jule looked at the clouds, able to feel the gateway cracking with his newfound powers.
"Damian, I'm so sorry about Jake," she said, voice cracking and fading into a whisper.
It was a sign that her power was weakening, just like the cracking of the sky in the underworld's dome.
The usual necrosis of the injured cortex occursdrying up, shrivelling, and consequent stretching and cracking of the dead cortex on the wood beneath.
The stills were formerly completely bricked in, so that the vapours should be kept fully heated until they escaped to the condenser, but since the introduction of the " cracking process," the upper part has usually been left exposed to the air.
The " cracking " process, whereby a considerable quantity of the oil which is intermediate between kerosene and lubricating oil is converted into hydrocarbons of lower specific gravity and boiling-point suitable for illuminating purposes, is one of great scientific and technical interest.
The cracking process practically consists in distilling the oils at a temperature higher than the normal boiling point of the constituents which it is desired to decompose.
A large number of arrangements for carrying out the cracking process have been proposed and patented, probably the earliest directly bearing on the subject being that of James Young, who in 1865 patented his " Improvements in treating hydrocarbon oils."
In the American petroleum refineries it is found that sufficient cracking can be produced by slow distillation in stills of which the upper part is sufficiently cool to allow of the condensation of the vapours of the less volatile hydrocarbons, the condensed liquid thus falling back into the heated body of oil.
The finished cylinder is next carried to a rack and the pipe detached from it by applying a cold iron to the neck of thick hot glass which connects pipe-butt and cylinder, the neck cracking at the touch.
It is suggested that these teeth may have been employed for cracking nuts or hard seeds; although also used for grinding.
The function of the sand is simply that of a diluent to prevent undue shrinkage and cracking in drying.
Hare hunting is essentially a quiet amusement; no hallooing at hounds nor whip-cracking should be permitted; nor should the field make any noise when a hare is found, for, being a timid animal, she might be headed into the hounds' mouths.
The party therefore camped on the drifting floe, keeping up scientific observations and maintaining their health and spirits though in continual danger from the floes ridging up or cracking asunder.
(a) Condensing the tar in the ordinary way, and afterwards using the whole or portions of it for cracking into a permanent gas.
(b) Cracking the tar vapours before condensation by passing the gas and vapours through superheaters.
These, though not showing a great resistance to extreme heat, are very slightly affected by sudden alternations in heating, as they may be plunged cold into a strongly heated furnace without cracking, a treatment to which French and Stourbridge pots cannot be subjected with safety.
I also heard the whooping of the ice in the pond, my great bed-fellow in that part of Concord, as if it were restless in its bed and would fain turn over, were troubled with flatulency and had dreams; or I was waked by the cracking of the ground by the frost, as if some one had driven a team against my door, and in the morning would find a crack in the earth a quarter of a mile long and a third of an inch wide.
Two young citizens were joking with some serf girls who were cracking nuts.
He ran round to the other side of the lodge and was about to dash into that part of it which was still standing, when just above his head he heard several voices shouting and then a cracking sound and the ring of something heavy falling close beside him.
Cracking of the sky.