Mr. George Johnston, a lumber merchant of Pittsburg, was another witness. "I had gone to Johnstown," he says, "to place a couple of orders. I had scarcely reached the town, about three o'clock in the afternoon, when I saw a bulletin posted up in front of the telegraph office, around which quite a crowd of men had congregated. I pushed my way up, and read that the waters were so high in the Conemaugh that it was feared the three-mile dam, as it was called, would give way. I know enough about Johnstown to feel that my life was not worth a snap once that dam gave way. Although the Johnstown people did not seem to pay much attention to the warning, I was nervous and apprehensive. I had several parties to see, but concluded to let all but one go until some later day. So I hurried through with my most urgent transactions and started for the depot. The Conemaugh had then gotten so high that the residents of the low-lying districts had moved into upper stories. I noticed a number of wagons filled with furniture hurrying through the streets. A few families, either apprehensive of the impending calamity or driven from their houses by the rising waters, had started for the surrounding hills. Johnstown, you know, lies in a narrow valley, and lies principally on the V-shaped point between the converging river and Stony Creek. "I was just walking up the steps to the depot when I heard a fearful roar up the valley. It sounded at first like a heavy train of cars, but soon became too loud and terrible for that. I boarded a train, and as I sat at the car window a sight broke before my view that I will remember to my dying day. Away up the Conemaugh came a yellow wall, whose crest was white and frothy. I rushed for the platform of the car, not knowing what I did, and just then the train began to move. Terrified as I was, I remember feeling that I was in the safest place and I sank back in a seat. When I looked out again what had been the busy mill yards of the Cambria Iron Company was a yellow, turbulent sea, on whose churned currents houses and barns were riding like ships in a brook. The water rushing in upon the molten metal in the mills had caused deafening explosions, which, coupled with the roar and grinding of the flood, made a terrifying din. Turning to the other side and looking on down the valley, I saw the muddy water rushing through the main streets of the town. I could see men and horses floundering about almost within call. House-tops were being filled with white-faced people who clung to each other and looked terror-stricken upon the rising flood.