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Updated: July 8, 2025
The brig was, as I have already said, heading to the eastward, close-hauled, on the port tack, under everything that we could set, to her royals; but the wind was so scant that even the light upper sails flapped and rustled monotonously to the sleepy heave and roll of the ship, and it was only by glancing through a port at the small, iridescent air-bubbles that drifted astern at the rate of about a knot and a half in the hour that we were able to detect the fact of our own forward movement at all.
After a time it will become cloudy and turbid; little bubbles will be seen rising to the surface, and their abundance will increase until the liquid hisses as if it were simmering on the fire. By degrees, some of the solid particles which produce the turbidity of the liquid collect at its surface into a scum, which is blown up by the emerging air-bubbles into a thick, foamy froth.
When it is wished to interrupt it, it is only necessary to raise the glass stopper in order to see the stream dry up after a short time. Another arrangement consists of a contrivance constructed on the principle of the common India-rubber inhaling apparatus, and sends the silver solution into the gelatine in the form of the minutest air-bubbles.
Then, almost in the self- same instant, and before one's benumbed senses found time to realise the ghastly tragedy, there was a rapid swirl of water alongside, an ear- splitting yell, and the miserable man was dragged down, an ensanguined patch in the deep crystalline blue, and a few transitory air-bubbles alone marking the spot from which he had vanished. Involuntarily I glanced astern.
He speaks of it, from a personal examination, as "a glass stoup, a drinking vessel, about six inches in height, having a circular base, perfectly flat, two inches in diameter, gradually expanding upwards till it ends in a mouth four inches across. The material is by no means fine in quality, presenting, as it does on close inspection, several small cavities or air-bubbles.
His head struck heavily against the stonework, and he and the dog, who would not loose his grip, lay on it for a moment, then they rolled off together into the deep pool, the man dragging the dog with him. There were a few ripples, stained with little red filaments, a few air-bubbles that marked the exhalation of his last breath, and George's spirit had left its enclosing body, and gone whither?
The whole trouble is air-bubbles. The hotter it is poured the greater the amount of air-bubbles. At 212 it can be put on rods and there is no bubble. I have a man experimenting and testing all the time. Until I get at the proper method of pouring and getting rid of the air-bubbles, it will be waste of time to experiment with other asphalts. Resin oil distils off easily.
The long-legged skaters, too, seemed wonderful fellows, shuffling about on top of the water, with air-bubbles like little bladders tangled under their hairy feet; and we often wished that we also might be shod in the same way to enable us to skate on the lake in summer as well as in icy winter.
Precisely what Rumford did; she whips her albumen to obtain a soufflée, a froth composed of myriads of tiny air-bubbles, which will protect the germs of life contained in the central core.
The resistance which the surfaces of the proportions of air meet in the water, and which opposes the force exerted by these portions towards dilation, is far less, and consequently the effect of the air greater, in large air-bubbles than in small, even though these small bubbles combined should form as great a mass as the large.
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