It has been said that the peasants of the Campagna, in their semi-annual visits to the Pontine marshes, arrive piping and dancing; but it is seldom they return in the same merry mood, the malaria fever being sure to affect them more or less. Although I did not leave Jackson on the night of the 15th piping and dancing, yet it was with a very happy heart and very little foreboding of evil that I set off with a party of friends for a pleasant visit to Vicksburg.