submitted rough drawings of a casemated vessel with submerged ends, and inclined iron-plated sides, which was approved by the department.
3. That Chief Engineer Williamson and Constructor Porter were ordered to report in Richmond about the 23d of June for consultation on the same subject generally, and to aid in the work.
4. That Mr. Williamson and Mr. Porter approved the plan of having submerged ends to obtain flotation and invulnerability, and a clean drawing was prepared by Mr. Porteramson thoroughly overhauled her engines, supplied deficiencies, repaired defects, and improved greatly the motive power of the vessel.
Secretary Mallory further states that when Constructor Porter came to Richmond, as previously stated, about June 23d, Constructor Porter brought and submitted the model of a flat-bottomed, light-draught propeller, casemated battery, with inclined iron sides and ends, which is deposited in the department.
Mr. Porter and Lieutenant Brooke have adopted for their