From Mississippi.
Morton, July 24.
--The enemy evacuated Jackson yesterday morning.
Colonel Wirt Adams's cavalry dashed in and captured a few stragglers.
Canton has also been evacuated. Grant's entire army has gone to Vicksburg. They have entirely devastated the country through which they passed.
Our cavalry captured forty robbers, with a Lieutenant, who were sacking houses.
An attempt to blow up the State-House failed, although it is badly damaged.
Our cavalry are pursuing. They have destroyed all the machine shops, rolling stock, cannon, and track, between Jackson and Vicksburg.
Mobile will no doubt be the next place of attack.
[second Dispatch.]
Morton, July 24.
--An officer from Vicksburg says that McPherson's entire corps left that place on the 21st, moving up the river.
Their officers stated that they were going to Richmond. Transports from above are constantly arriving.
Nearly all the rolling stock and cannon have been sent up to Grenada, and were consequently saved.
