Summary

Portrait of Morgan Robertson Morgan Robertson Down to the Sea — Fifty Fathoms Down (1905)

He could only fix in his mind a few chemical facts not forgotten: that he was using up the existing oxygen by combining it, in his lungs, with carbon to form carbon dioxide, ten per cent. of which, in the air, might be fatal; that the hydrogen which he would make, with his oxygen, was non-poisonous, like the nitrogen of the air, but that, there being less of it as a diluent, he might suffer from a preponderance of oxygen; and that this astringent gas that would also evolve from the salt water was a deadly poison to be got rid of.
Source: Wikisource

Portrait of Morgan Robertson Morgan Robertson Down to the Sea — Fifty Fathoms Down (1905)

Breen was washed downward by the inrush of water, but held a grip on the conning-tower ladder, and found voice to call out: "Stop the engine! Shut off the gas!" Then, against that almost solid column of descending salt water, he fought his way upward until, face above the hatch again, but looking now into the blackness of the deep sea, he seized the hand-hold of the hatch-lid and pulled it down. It closed with a force that would have shivered anything but armor steel, and Breen, half drowned, fell to the floor of the handling-room.
Source: Wikisource

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