Two officers of the Navy were heretofore instructed to explore the whole extent of the Amazon River from the confines of Peru to its mouth. The return of one of them has placed in the possession of the Government an interesting and valuable account of the character and resources of a country abounding in the materials of commerce, and which if opened to the industry of the world will prove an inexhaustible fund of wealth. The report of this exploration will be communicated to you as soon as it is completed. Among other subjects offered to your notice by the Secretary of the Navy, I select for special commendation, in view of its connection with the interests of the Navy, the plan submitted by him for the establishment of a permanent corps of seamen and the suggestions he has presented for the reorganization of the Naval Academy. In reference to the first of these, I take occasion to say that I think it will greatly improve the efficiency of the service, and that I regard it as still more entitled to favor for the salutary influence it must exert upon the naval discipline, now greatly disturbed by the increasing spirit of insubordination resulting from our present system. The plan proposed for the organization of the seamen furnishes a judicious substitute for the law of September, 1850, abolishing corporal punishment, and satisfactorily sustains the policy of that act under conditions well adapted to maintain the authority of command and the order and security of our ships. It is believed that any change which proposes permanently to dispense with this mode of punishment should be preceded by a system of enlistment which shall supply the Navy with seamen of the most meritorious class, whose good deportment and pride of character may preclude all occasion for a resort to penalties of a harsh or degrading nature. The safety of a ship and her crew is often dependent upon immediate obedience to a command, and the authority to enforce it must be equally ready. The arrest of a refractory seaman in such moments not only deprives the ship of indispensable aid, but imposes a necessity for double service on others, whose fidelity to their duties may be relied upon in such an emergency. The exposure to this increased and arduous labor since the passage of the act of 1850 has already had, to a most observable and injurious extent, the effect of preventing the enlistment of the best seamen in the Navy. The plan now suggested is designed to promote a condition of service in which this objection will no longer exist. The details of this plan may be established in great part, if not altogether, by the Executive under the authority of existing laws, but I have thought it proper, in accordance with the suggestion of the Secretary of the Navy, to submit it to your approval.