Alexandria Gazette, Commercial And Political

From the Boston Palladium.

CANADA.

MONTREAL, June 25.

Private advices from London state, that a personage high in command had submitted a system which if circumstances could admit ought to be adopted in preference to any other.

Admiral Warren, for want of a competent force, was unable to effect any thing last year; this year circumstances are changed, and Britain has more force than she can employ.

The plan submitted by the personage alluded to, who is as firm in council as he is consummate in the field, is said to be as follows; the detached corps in Upper Canada are merely intended to keep the enemy in effectual check, while Sir James Yeo will maintain his point on Lake Ontario.

The troops destined for the coast, will act at points where most advantageous, in the province of Marine; these will form the center; the army of Canada the right, the navy the left. This well combined plan cannot fail of having a proper effect, and it has wisely been deferred until an adequate force could be brought to bear in all directions. Such are the rumors founded upon private advices, but the authenticity is not vouched for from an official source.

There are many reasons, however, which lead to believe that the new plan will be followed up. 1st, from the vigor and perseverance of this government when armed with sufficient force; 2d. that peace could not be conquered in the southern states; 3d, that the resistance of the northern states to their adversaries is a mere war of frothy words having no meaning; and 4th, for the purpose of obtaining peace, you must strike the enemy where he is strongest, his vitals are in New England, touch him gently there, and you will soon discover whether he is sincere or knavish. Indulgence will never bring any American into a tone of rectitude.