Dahlgren's torpedoes
--A letter from Richmond, in a Southern paper, says:‘ I have seen one of the torpedoes Dahlgren brought with him on his tour of assassination and arson. It is an iron cylinder, six inches long two inches in diameter, with a fuse attached. A paper of printed instructions is pasted on the outside, like the label of phial of physic. On this paper is a diagram of the "Howe russ Bridge." the common railroad bridge of the South, with places marked where the torpedo is to be inserted in sugar holes bored for the purpose.
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