Lake Champlain is a long narrow lake to the N.E. of Ontario, communicating with the St. Lawrence a few miles below Montreal by the river Chamblee, or Sorel.  It is nowhere more than eighteen miles across, and its average breadth does not exceed five.  Below Crown Point it is a mere channel for ten or twelve miles to its southern extremity at Ticonderoga.  Here it receives the waters from a small lake to the southward, Lake George, but the communication, as well as that with the St. Lawrence, is interrupted by shoals and rapids.  From Lake George to the Hudson is only six or eight miles, the sole interruption to a water frontier from the St. Lawrence to New York, navigable for vessels of burden for four-fifths of its length, and for bateaux nearly all the way.  The command of this line would enable the northern and southern armies to co-operate effectually; to press on the New England States along their whole border; to cut off all communication between them and the rest of the Union, and to prevent any hostile attempt on Canada.

Measures were promptly taken to secure this important object.  Detachments from the King’s ships at Quebec, with volunteers from the transports, and a corps of artillery, in all, nearly 700 men, were sent across to the Lake, there to construct, with timber felled by themselves, and in the presence of a superior enemy, the vessels in which they were to meet him.  A party joined from the Blonde, under Lieutenant Dacres, with Mr. Brown, one of the midshipmen.  Mr. Pellew was to have remained with the ship; but he appeared so much disappointed at the arrangement, that Captain Pownoll allowed him also to go.

The season was already so far advanced, that it would have been a creditable service only to complete the preparations for the next campaign; but the zeal and exertions of the officers and men surpassed all calculation.  They got across to the Lake thirty long-boats, many large flat-bottomed boats, a vast number of bateaux, and a gondola of thirty tons, carrying them over land, or dragging them up the rapids.  The keel and floor-timbers of the Inflexible, a ship of three hundred tons, which had been laid at Quebec, were taken to pieces, and carried over to St. John’s, on the Lake, where a dockyard was established, under the superintendence of Lieutenant Schanck, an officer of extraordinary mechanical ingenuity.  Here, on the morning of the 2nd September, the Inflexible was again laid down, and by sunset, all her former parts were put together, and a considerable quantity of additional timbers prepared.  The progress of the work was like magic.  Trees growing in the forest in the morning, would form part of the ship before night.  She was launched in twenty-eight days from laying her keel, and sailed next evening, armed with eighteen twelve-pounders, and fully equipped for service.  Two schooners, the Maria, and the Carleton; the Loyal Convert, gondola; the Thunder, a kind of flat-bottomed