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The men let the life-line and air-tube slip, until the rushing descent was somewhat abated, and then, checking the involuntary diver, they hauled him slowly to the surface, where his arms and open palms went swaying wildly round until they came in contact with the ladder, on which they fastened with a grip that was sufficient to have squeezed the life out of a gorilla.

She dared not look Julian in the face. Never before had her past risen up before her painted in such grim and undying colours. The reprise of Valentine had been as the reprise of a Maxim gun to a volley fired by a child from an air-tube. So Cuckoo felt. But how greatly was she deceived!

I jerked savagely at my signal-cord to let them know that I wanted to be pulled up, it was possible that I might reach the surface before being suffocated, but the cord offered no resistance; I pulled it toward me as I jerked. It had been cut or broken. "Then I took hold of my air-tube and pulled it. It, too, was unattached at the other end; it had no connection with the air-pump.

This naturally throws them into three great groups: those about and controlling the orifice of the alimentary canal, the mouth; those surrounding the joint openings of the air-tube and organ of smell, and those surrounding the eyes.

But how to escape from his wire-cage was a difficulty he could not solve, for the lamp had been extinguished, and the entanglement of his line and air-pipe rendered signalling impossible. He continued to struggle helplessly, therefore, in total darkness. That the air-tube continued all right, was evident from the fact that air came down to him as before.

We have here two tubes inserted at each end of the large tube, and in each of these is a cock. We have each cock connected by a rod to the lever set on a pin in the middle of the tube. Now if the air-pressure is constant through the forked air-tube, and the cock E. is open, if the top of the lever is moved to the right, the pellet will be pushed to the left in the large tube.

Armed with this apparatus, a diver is enabled to follow his vocation without any air-tube connecting with the surface, indeed without any connections whatever. Altogether, on this occasion, this man was under the water, and without any communication with those above, for one hour and twenty-five minutes.

The thick tube supplying the light-producing sheet increases the flow of air and the light is intensified; the same air-tube, swayed by the animal's will, slackens or even suspends the passage of air and the light grows fainter or even goes out. It is, in short, the mechanism of a lamp which is regulated by the access of air to the wick. Excitement can set the attendant air-duct in motion.

I pulled in the end of the signal-cord, and I found it had not been rubbed and torn by barnacles; the end of it had been clean cut with a knife. I remembered that this was the case with the air-tube; as I placed it into the bung-hole of the first hogshead I had noticed how smoothly it had been severed. "Now I felt a tug at the rope by which I was raised and lowered. I didn't like this.

In short, if the enemy is there, it would be madness to attack him in front; he must be maneuvered out by the immemorial plan of threatening his line of communication, as necessary to his existence as to the diver at the bottom of the sea his air-tube. But how ascertain if the enemy is there? There is but one way: somebody must go and see.