The steamer Black Swan, belonging to the Tasmanian Steam Navigation Company, left the Queen’s’ Wharf, Melbourne, at 10 o’clock on Tuesday, morning, 16th July, for Launceston, and had at 11 o’clock got nearly abreast of the breakwater running off from Williamstown, when the steamer Luna, coming from Geelong, reached the same spot. The two vessels then came into collision, the Luna striking the starboard bow of the Black Swan stem on, cutting into her to a considerable distance. So great was the force of the shock that it was with difficulty the Luna could, by backing astern, extricate herself, and the Black Swan‘s head was forced from the course she was going right round.