On the 12th of October, 1492, Christopher Columbus landed upon the shores of San Salvador, one of the West India islands, and thus revealed to astonished Europe a new world. Four years after this, in the year 1496, Sebastian Cabot discovered the continent of North America. Thirty-three years passed away of many wild adventures of European voyagers, when, in the year 1539, Ferdinand de Soto landed at Tampa Bay, in Florida, and penetrating the interior...