I reach the Hudson over the Erie Railroad. At this point the underground tube makes a wide curve inland, and in order to get to the trains we must walk through a long concrete cave far underground. The other morning several trains arrived at the Erie station together, and their passengers were all dumped into this cave like grain poured into a long sack. There was a solid mass of humanity slowly making its way to the end. The city worker naturally adapts himself to a crowd. He at once becomes an organized part of it. Take a thousand countrymen, each from the wide elbow room of his farm, and throw them together in a mass and they would trample each other in a panic. The city crowd, as long as it can be kept good-natured, will march on in orderly fashion; but let it once be overcome by fear, and it will be more uncontrolled than the throngs of countrymen. This cave is brilliantly lighted, and we were moving on in orderly procession, without thought of danger. We would move forward perhaps 50 feet and then halt for a moment—to move ahead once more. During one of these halts I looked about me. At my right was a group of giggling girls; at my left a white-faced, nervous man; behind, a lame man, and in front two great giants in blouse and overalls. I was close by the change booth. A slight, pale-faced young woman sat within; the piles of money in front of her. A husky, rough-looking man was offering a bill to be changed. I saw it all, and as I looked, in an instant the lights flashed out and left us in inky darkness. I have been left in dark, lonely places where I groped about without touching a human being, but it was far more terrifying to stand in that closely packed crowd and to realize what would happen in case of a panic. I reached out my hand and could touch a dozen people, but I could hear no sound. Suppose these silly girls were to scream; suppose this man at my elbow were to yell “Fire!” as fools have often done in such crowds. Suppose that man at the booth reached in, strangled the girl and swept the money out. At any of these possible alarms that orderly crowd in the dark might change to a wild mob, smashing and trampling its way back to the entrance, as uncontrollable as the crazy herds of cattle I had seen in Western stampedes. The deaf man thinks quickly at such times, and in the black silence dangers are magnified. The deaf are usually peculiar in their mental make-up; most of them have developed the faculty of intuition into a sense, and they can quickly grasp many situations which the average man would hardly imagine.