DECEMBER TERM, 1851. The State of Pennsylvania having constructed lines of canal and railroad, and other means of travel and transportation, which would be injured in their revenues by the obstruction in the River Ohio, created by a bridge at Wheeling, has a sufficiently direct interest to sustain an application to this court, in the exercise of original jurisdiction, for an injunction to remove the obstruction. The remedy at law would be incomplete. It is admitted that the federal courts have no