The gentleman is still alive (in his 92d year) who, in June, 1790, cut the first tree ever cut on the town plot of Gallipolis, Ohio. At that time there was a small settlement at Marietta and another at Cincinnati; the balance of Ohio was a wilderness; there were not, then, probably 1,000 white people in it altogether; now it contains near 2,500,000 inhabitants, and has been changed from a wilderness to one of the best agricultural States in the Union. Who ever before, in a single life, witnessed such a change?