SIR--I have been all day down at the scene of the wreck of the DUNBAR, and had a long interview with Johnson, the man who was saved. If the statement he made to me, and which I carefully noted, be of any service to you as information of a correct character for the public, who all feel a deep interest in this melancholy event, I shall be glad that I have taken this course to forward it. He stated that they were off Botany at half-past eight o'clock p.m., Thursday; the captain then stood off shore, on the starboard tack, ship with double-reefed fore and main topsails; a very dirty dark, and rainy night, two men were placed at the wheel; Captain Green instructed them to keep their luff; he (Captain Green) had not been off the deck for two hours since they first made land, some days previously; at half-past eleven p.m., the captain gave orders to square away, which was done; the ship then ran under close-reefed fore and main topsails and foresail. As they neared the "light" the captain ordered the foresail to be clewed up, sent the second mate to the foresail to keep a look-out, then very dark; told him to "keep a good look-out for the North Head." The captain asked if he could see the Head. The mate replied no, it was solid darkness. The second mate suddenly called out "Breakers a-head." The captain ordered the helm to be put hard to starboard to bring the ship round, then blowing strong; ship on a dead lee shore, having such small sail upon her, the ship would not come round, (this was about 12 o'clock), and the sea lifting her in, she almost immediately struck; the passengers, who had been in bed, rushed up on deck in their night dresses; their shrieks were dreadful (Johnson describes the scene at this time the most terrible part of the whole; the ladies asked the captain, and entreated the seamen to know if there was any hope; the ship was still holding together, and the men thought and said there was hope.) Almost immediately after, as if in angry denial of that expression, the decks burst up from the pressure of the water, the ship was rent into a thousand pieces, and all on board (except him) were hurried into the foaming terrific sea. [Illustration: THE SAILOR RESCUED.]