There should be a general law of Congress prohibiting the construction of bridges over navigable waters in such manner as to obstruct navigation, with provisions for preventing the same. It seems that under existing statutes the Government can not intervene to prevent such a construction when entered upon without its consent, though when such consent is asked and granted upon condition the authority to insist upon such condition is clear. Thus it is represented that while the officers of the Government are with great care guarding against the obstruction of navigation by a bridge across the Mississippi River at St. Paul a large pier for a bridge has been built just below this place directly in the navigable channel of the river. If such things are to be permitted, a strong argument is presented against the appropriation of large sums of money to improve the navigation of this and other important highways of commerce. The report of the Secretary of the Navy gives a history of the operations of his Department and the present condition of the work committed to his charge. He details in full the course pursued by him to protect the rights of the Government in respect of certain vessels unfinished at the time of his accession to office, and also concerning the dispatch boat Dolphin, claimed to be completed and awaiting the acceptance of the Department. No one can fail to see from recitals contained in this report that only the application of business principles has been insisted upon in the treatment of these subjects, and that whatever controversy has arisen was caused by the exaction on the part of the Department of contract obligations as they were legally construed. In the case of the Dolphin, with entire justice to the contractor, an agreement has been entered into providing for the ascertainment by a judicial inquiry of the complete or partial compliance with the contract in her construction, and further providing for the assessment of any damages to which the Government may be entitled on account of a partial failure to perform such contract, or the payment of the sum still remaining unpaid upon her price in case a full performance is adjudged. The contractor, by reason of his failure in business, being unable to complete the other three vessels, they were taken possession of by the Government in their unfinished state under a clause in the contract permitting such a course, and are now in process of completion in the yard of the contractor, but under the supervision of the Navy Department.