...; it being simply necessary to remove the upper works and to cut them down forward and abaft the shield sufficiently to submerge the ends when down to the load-line, as illustrated in the case of the Confederate States steamer Virginia, which vessel was constructed in accordance with the plan herein set forth, furnished by me on the 23rd day of June, 1861, to the Honorable S. R. Mallory, Secretary of the Navy, to W...