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In one corner lay several of the massive breast and back weights by which divers manage to sink themselves to the bottom of the sea; in another stood the chest containing the air-pump by means of which they are enabled to maintain themselves alive in that uncomfortable position; while in a third and very dark corner, an old worn-out helmet, catching a gleam from the solitary window by which the place was insufficiently lighted, seemed to glare enviously out of its goggle-eyes at its glittering successors.
This first rectification is performed in a vacuum, for a system of metallic pipes connects the entire apparatus with an air-pump, O. The temperature at which the liquids shall enter into ebullition in the boilers, A A, may, then, be regulated in advance. The operations will be carried on with a more or less complete vacuum, according to the nature of the products to be rectified.
That country cries for it, you say. The snuffling old air-pump across the Channel says the same thing. Says he: 'Beloved brethren, I greet you. I fall on your neck and kiss your two ears, and give you all you ask. For why, beloved brethren? Why do I this thing. Let us in a spirit of love enquire.
He beheld then, waddling towards him autocratically, a man of an old-fashioned and gouty aspect, with hair as white as his own, but with shaved, florid cheeks, wearing a necktie almost a neckcloth whose stiff ends projected far beyond his chin; with round legs, round arms, a round body, a round face generally producing the effect of his short figure having been distended by means of an air-pump as much as the seams of his clothing would stand.
There must have existed innumerable inventions that we might term mechanical romances, which, however, we cannot refer to because they have left us no trace, not being born viable. Others are known as curiosities because they have blazed the path. We know that Otto de Guericke made four fruitless attempts before discovering his air-pump.
At first from mere curiosity and after from a sentiment of respectful devotion, Guy was impelled to study that delicate and sensitive nature, entirely swayed by love of Sulpice, that suffered at times a vague pressure as of some indefinable anguish at the throat, as if a vacuum a choking vacuum had been created about her by some air-pump.
In one side of the box is a circular aperture connecting with an iron tube, which in its turn is joined to a powerful condensing air-pump outside, and on the other side is a pressure gauge with its index inside the box.
To this he attached a long rubber tube, while the other end was connected with a small air-pump. The ever-handy donkey-engine was used to work the pump, and the body of the whale was slowly filled with air in the same way that a bicycle tire is inflated. "What's that for?" asked Colin, who had been watching the process with much curiosity. "So that he will float," the captain answered.
And if while we are working at it you choose to try to find out more about them two ships, you can do it. "'And how can I do it? said I. "'If you can go down in a diver's suit you can do it, said he. 'I don't know whether you know anything about that business, but if you want to try, I have got a whole kit on board, air-pump, armor, and everything.
When the doctor's four guests heard him talk of his proposed experiment, they anticipated nothing more wonderful than the murder of a mouse in an air-pump or the examination of a cobweb by the microscope, or some similiar nonsense, with which he was constantly in the habit of pestering his intimates.
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