LAUNCH. -- A Steam Boat of a beautiful model called the VULCAN, was launched on Wednesday, from Mr. Parkin's Ship Yard; she is owned by Sanderson and Murray, and is intended for the Rideau Canal. She went off in fine style, and was towed in by the SWAN, which boat is also to ply on the Rideau for S. And M. who will also have three boats with Ericson's propellers running in about a fortnight. ----- Brockville Recorder.