Vicksburg, Friday, July 10. Everybody busy preparing permanent quarters. Tarpaulins spread over picket rope. Water the horses in the river twice a day, passing through the center of Vicksburg. It is planted on very rough ground, very scattering with the exception of the first streets. Notwithstanding the lay of the country, it is made beautiful by shrubbery and shade trees which are liberally and beautifully planted along the street.