As we were hurled along over the great highway the things I remember with the most satisfaction were the groups or processions of army trucks we met coming east. The doom of kaiserism was written large on that Lincoln Highway in that army of resolute, slow-moving army trucks. Dumb, khaki-colored fighters on wheels, staunch, powerful-looking, a host of them, rolling eastward toward the seat of war, some loaded with soldiers, some with camp equipments, and all hinting of the enormous resources the fatuous Kaiser had let loose upon himself in this far-off land. On other highways the weapons and materials of war were converging toward the great seaports in the same way. The silent, grim, processions--how impressive they were! Pittsburgh is a city that sits with its feet in or very near the lake of brimstone and fire, and its head in the sweet country air of the hill-tops. I think I got nearer the infernal regions there than I ever did in any other city in this country. One is fairly suffocated at times driving along the public highway on a bright, breezy August day. It might well be the devil's laboratory. Out of such blackening and blasting fumes comes our civilization. That weapons of war and of destructiveness should come out of such pits and abysses of hell-fire seemed fit and natural, but much more comes out of them--much that suggests the pond-lily rising out of the black slime and muck of the lake bottoms. We live in an age of iron and have all we can do to keep the iron from entering our souls. Our vast industries have their root in the geologic history of the globe as in no other past age. We delve for our power, and it is all barbarous and unhandsome. When the coal and oil are all gone and we come to the surface and above the surface for the white coal, for the smokeless oil, for the winds and the sunshine, how much more attractive life will be! Our very minds ought to be cleaner. We may never hitch our wagons to the stars, but we can hitch them to the mountain streams, and make the summer breezes lift our burdens. Then the silver age will displace the iron age. The western end of Pennsylvania is one vast coal-mine. The farmer has only to dig into the side of the hill back of his house and take out his winter's fuel. I was surprised to see how smooth and gentle and grassy the hills looked. It is a cemetery of the old carboniferous gods, and it seems to have been prepared by gentle hands and watched over with kindly care. Good crops of hay and grain were growing above their black remains, and rural life seemed to go on in the usual way. The shuffling and the deformation of the earth's surface which attended the laying down of the coal-beds is not anywhere evident. The hand of that wonderful husbandman, Father Time, has smoothed it all out.