A few years ago the author visited the farm in Western Pennsylvania on which he had lived for a number of years when a boy. Much to his surprise there was not a boy of his acquaintance still on the neighboring farms, many of which had passed into other hands, and in some cases even the names of the original owners had been forgotten.He bumped over the two short miles of road, still deep with mud, between the town and the farm, and could scarcely recognize in the weedy fields before...