...anageable calibers. I had been appointed chief engineer of the Expeditionary Corps, and in that capacity was directed by General T. W. Sherman, on the 29th of November, to make an examination of Tybee Island and Fort Pulaski, and to report upon the propriety of holding the island, and upon the practicability, and, if practicable, on the best method, of reducing the fort. I reported that I deemed the re...