I had the honor yesterday to receive your excellency's letter, dated the 21st ultimo, and I entreat you to believe that no act within my control shall afford the government of the United States a legitimate pretext to add to a clamour which has been so artfully raised against England.

We have received the account of the renewal of the embargo, and that the most rigorous measures have already been adopted to prevent the least infringement of it upon the Niagara river. Armed men, in coloured clothes, are continually patroling along the shore. These troops are stated to have recently arrived, but I have not been able to ascertain whether they belong to the new levy or to the militia. They are reported to amount to about 300. Colonel Proctor has doubtless written fully on the subject, but unfortunately the letters, by some negligence, were left at Niagara. The accounts which have reached me are not therefore so satisfactory as could be wished. An idle boy is stated to have wantonly fired with ball at the guard opposite Queenstown, and it appears that the Americans were guilty of a similar outrage by firing during the night into a room in which a woman was sitting. Luckily no mischief followed. Being detained here upon civil business, I have sent Captain Glegg over to see how matters stand, and to arrange with both civil and military the best means of preventing a recurrence of a practice which may easily lead to serious consequences. I hope to be at Niagara myself the day after to-morrow.

I beg leave to assure your excellency, that I receive with no small degree of pride the praise bestowed on my endeavours to improve the militia system of this province; and as the bill underwent some alterations after the departure of Colonel M'Donnell, particularly in limiting its operation to the end of the ensuing session, I shall have the honor to forward for your excellency's information the law as now enforced. I have, by partial and gentle means, already commenced to give it operation, and I make not the least doubt that a sufficient number will be found ready to volunteer to complete the flank companies; and I here beg leave to call your excellency's attention to the clause which authorizes the training of the flank companies six times in each month; but as no provision is made for remunerating the men, I presume to submit for your excellency's indulgent consideration, that the commissaries be instructed to issue rations for the number actually present at exercise. These companies I expect will be composed of the best description of inhabitants, who in most cases will have to go a great distance to attend parade; and, unless this liberal provision be allowed, will be liable to heavy expense, or be subject to considerable privations. According to my present arrangements, the number embodied will not exceed 700, and when the companies are completed throughout the province, they must be calculated at 1,800; and, as during harvest and the winter months few or no parades will take place, the total expense attending the measure can be of no material consequence in a pecuniary point of view, and may in a political light be productive, at this juncture, of considerable benefit.

I have likewise to request that such portion of clothing as your excellency can conveniently spare from the king's stores, may be forwarded, to enable me to clothe such companies as are the most likely to be called upon duty.

I am anxious to hear the real object of the embargo; should it be directed solely against England, the probability is that it leads to a war; but should France be included in its operation, nothing of the kind need be dreaded.

In the expectation of having the honor of seeing your excellency shortly at York, I limit, for the present, the works of the military artificers at this place, to preparing a temporary magazine for the reception of the spare powder at Fort George and Kingston, and the excavation of the ditch for the proposed fortifications of the spot on which the government house stands.

I transmit, for your excellency's perusal, a detailed account of the transactions which led to the unjustifiable censure passed by the house of assembly upon Chief Justice Scott. It is written by Mr. Nichol himself; and the warmth with which he has expressed his indignation at the wanton exercise of a power yet undefined, as far as regards this province, is not therefore surprising. I am convinced that whenever the business is brought legally before the judges, they will refuse to sanction the enormous power, under the name of privilege, which the house arrogates to itself. The executive will in that case be placed in a very awkward predicament: Mr. Nichol having commenced civil actions against the speaker and sergeant at arms for false imprisonment, will, should he succeed in obtaining damages, bring the question with double force on the tapis. The violence and ignorance which, in all probability, will mark the proceedings of the house, cannot fail of producing a dissolution. I apply forcibly to ministers for instructions, but should they be contrary to the opinion which the judges of the court of king's bench have formed of the law, I am led to believe they will not influence the members; therefore, one of two alternatives must be resorted to, either the appointment of more docile judges, or the decision of the question by a British act of parliament. I trust, for the tranquillity and prosperity of the province, that the latter mode may be preferred. I have thus freely, and perhaps with rather too much haste to be sufficiently explicit, stated the difficulties which in all likelihood I shall have to encounter at the next meeting of the legislature.

Should the effect of the embargo appear to be directed solely at Great Britain, I shall avail myself of the confidence placed in me, and order the purchase of horses, to enable the car brigade to act in case of necessity. This, being a service which requires infinite trouble and practice to bring to any degree of perfection, cannot be too soon attended to.

Sir George Prevost to Major-General Brock.

QUEBEC, April 30, 1812.