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Updated: June 7, 2025
To put matters right, it is necessary to do one of two things either cut down the supply of gas or increase the air-supply. Providing the air aperture is normal, i.e., the same size as it was originally, it is better to adjust the gas, which may be done by tapping up the nipple N, as indicated in the enlarged sketch, fig. 14, until just the right amount of gas can flow.
He now turned down the gas and replaced the chimney, then set the tap at the same angle as before. "Here," said he, "we have a flame barely four inches high of brilliant white which gives more light than the taller flame did. The cause of the shortening of the flame is the more rapid combustion of the gas, owing to the increased draught or air-supply in the chimney.
Making an ungainly bundle of the other Solarian equipment stored there, he dragged it along behind him as he clanked back toward his prison, until he neared the dock at which was moored the Nevian space-speedster which he was determined to take. Here, he knew, was the first of many critical points. The crew of the vessel was aboard, and, with its independent air-supply, unharmed.
I tried to quiet my fears by reasoning that Craig must have had perfect confidence in the value of his discovery if he were willing to risk his life on it, yet I felt that at least a show of vigilance on my part might bluff any one off from an attempt to tamper again with the air-supply. I stuck about closely.
To begin with he distended himself so that he could not sink at all. Then he sank with far too small a reserve, and struggled to the surface spluttering and half-drowned. It was only after much tribulation that he adjusted matters to a nicety, diving with just sufficient air-supply to last his purpose, and emerging at the proper moment.
Seaton felt his air-supply grow hot. Suddenly it became icy cold, and knowing that Rovol had energized the refrigerator system, Seaton turned away from the fascinating welding operation for a quick look around the laboratory.
To get the mixture normal again we must either enlarge the gas inlet or cut down the air-supply somewhat, and so keep the proportions the same. That is to say, the quality of the mixture is dependent upon the relative dimension of the gas and air inlets.
Breath should be emitted as slowly in a long, rapid phrase as in a slow phrase of the same length. It is only when rapid phrases succeed each other so quickly that there is no time between them for a deliberate, full inspiration, that half-breaths have to be taken to replenish the air-supply.
The business flourished greatly because everybody was daily in need of liquid air. The many sources of air-supply were guarded and men were employed to carry the liquid from the raw springs to the private tanks of the monopolists.
In very large animals, or where the skeleton is internal, it would hardly be practicable; the risk of compression of the tubes at some point, and of thus cutting off the air-supply of some portion of the body, would be altogether too great. The circulatory system is very poor.
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