...ublic Library. There we found his printed statements of the same, and also that he had acquired a water power in Medford and had begun to build steam engines for use on the canal. This was on the Aberjona river , a quarter of a mile up from the aqueduct that carried the canal over that stream. Mr. Sullivan's steamboat Merrimack was of the type of canal boat then in use. He already had some unsatisfact...