Michael Brennan was shockingly injured this morning on the railroad, near the Merrimack House. It seems he vra. trying to jump on the hunter of one of a traia of sand cars, and in doing so, fell, and the cars passed over him. His body was so much mangled that the bowels protruded, and both his legs were fractured, It was thought he could not survive— [Lowell Courier, 4th.