The launch, Night Owl, which is used as a night-ferry between Madison and Milton, collided with the steamer Vim at two o'clock yesterday afternoon while the boats were in the dike-chute.  Three men, Thomas Jenkins, Richard Deyhart, and William Evans, were aboard the small boat, which struck the Vim's hull when the steering gear went bad.  Evans and Deyhart jumped aboard the Vim, and Jenkins jumped into the river when the boats came together.  Jenkins was carried several hundred yards down the river y the swift dike current before he was picked up safe and sound by a skiff from the Vim which stopped after the collision.  The men in the launch were returning to Milton when the boats collided