The Steam Boat arrived here from Montreal on Sunday. She started from Montreal at 5 o'clock on Saturday morning, and anchored at Three Rivers, which she left on Sunday morning at 5 o'clock, and arrived at the King's Wharf, Quebec, at half-past two; being only 24 hours and a half under way between the two cities, with a strong head wind all the way. She is most superbly fitted up, and offers accommodation for passengers in every respect equal to the best hotel in Canada. In short, for celerity and security, she well {133} deserves the name of _Swiftsure_. America cannot boast of a more useful and expensive undertaking by one individual, than this of Mr Molson's. His Excellency, the Governor-in-chief, set out for Montreal on Tuesday afternoon, in the Steam Boat. The following letter from Molson, for the information of Sir George Prevost, governor-general during the War of 1812, refers to one of the first tenders ever made, in any part of the world, to supply steamer transport for either naval or military purposes. It was received at Quebec by Commissary-General Robinson on February 6, 1813: I received a letter from the Military Secretary, under date of the 15th Decr. last, informing me of His Excellency's approval of a Tender I had made of the Steam Boat for the use of Government; wherein I am likewise informed that you would receive instructions to cause an arrangement to be made for her Service during the ensuing Season. For the Transport of Troops and conveyance of light Stores, it will be necessary to fit her up in a manner so as to be best adapted for the purpose, which will be in my opinion something after the mode {134} of a Transport. For a passage Boat she would have to be fitted up quite in a different manner. If you wish her to be arranged in any particular manner under the direction of any Person, I am agreeable. I should be glad to be informed if His Excellency wishes or expects that I shall sail in her myself, whether Government or I furnish the Officers and men to Navigate and Pilot her, the Engineer excepted, the fuel and all other necessarys that may be required for her use. I imagine the arrangement must be for the Season, not by the Trip, as Government may wish to detain her for particular purposes. Ensurance I do not believe can be effected for less than 30 p. cent for the Season, therefore I must take the risque upon myself.