...sky of Italy had been overdone. At length, a traveler crossed the Alps who had an eye for the necessities of the soil. Mr. Greeley spent twenty-one days in Italy, paying flying visits to Turin, Genoa , Pisa, Florence, Padua, Bologna, Venice, Milan, and passing about a week in Rome. At Genoa, he remarked that the kingdom of Sardinia, which contains a population of only four millions, maintains si...