It was "murder," as Parker had said. Even as I went down I was conscious of the horror, of the inhumanity, of letting a poor devil, tied hand and foot like a dog in a sack, go to his doom with never a chance of making a fight for his life. For myself, being a fair swimmer, and accustomed to a cold dip in rough seas, winter and summer, I was in no such fear as entirely to lose my presence of mind. The danger lay, of course, in my being sucked under the ship's bottom and drowned before I could make my way to the surface; but as the steamer was going very slowly and had taken us side-on, rather than with the prow, I managed in a very few seconds to get clear of her wash, and up, with open eyes, on the top of the water. Apparently no one on board the steamer was aware that she had struck and sunk a rowing boat, for she went slowly but steadily on her way, as if nothing had happened. Had we not chanced to enter a fog bank a few minutes before the collision, and had I not been engaged in loosening Parker's bonds, the probability is that the accident would not have occurred. What most concerned me, however, was not the cause of the mishap, but the whereabouts of poor Parker. Again and again I crossed and re-crossed the subsiding wash of the vessel's wake; again and again I halloed and called the unhappy man by name; but all, alas, to no purpose. Except for the answering bark of a dog from a barge in-shore, the hooting of the steamer's fog-horn, and the washing of the water, there was no reply, and, being somewhat exhausted, I gave up the search and struck out for the nearest shore. It had been slack water for the last half-hour, and the tide was, fortunately for me, only just upon the turn; so, without being carried far out of my course, I was able to reach the river's bank in safety. Wet as I was, I could not walk the streets without attracting attention, but, luckily for me, the very first vehicle which came along was a doctor's carriage. I shouted to the driver to stop, and explaining my plight to his master by saying I had been run down in the fog while on the river, asked him to be so very good as to drive me to the police station. He not only consented, but plied me with a restorative of some sort which he had in his bag; and when I reached the station I was, except for a shivering fit, not very much the worse for my wetting. There, while I was having a rub down and changing into the clothes--a policeman's uniform--which was provided for me, I told my story. The superintendent was very civil. He said he was aware of the existence of the opium den in question, but otherwise knew of nothing criminal in connection with it, but would at once send a sufficient number of men to raid the place. He also rang up the river police on the telephone, suggesting that a boat should be sent out in search of Parker's body, and instructed a plain-clothes officer to accompany me in a cab to the address which I gave as my lodging.