Additional intelligence from the Canadian frontier and from the 'United

States has been received during the week. The British troops, commanded by Colonel JOHN MAITLAND of the Thirty- second Regiment, have sustained some smart skirmishes ; an offi- cial account of which, by the Colonel, renders it unnecessary to refer particularly to the rumours and statements in the American newspapers.

On the 24th of February, Colonel MAITLAND received informa- tion that a body of the "piratical rebels from Detroit," from 300 to 500 in number, had taken possession of Fighting Island, a long strip of land about eight miles from Amherstburg, and were pre- paring to fortify it. Colonel MAITLAND lost no time in despatch- ing three companies of regular troops and 250 militia, with a nine- pounder, to attack the intruders ; who fled,tafter a trifling resist- ance; and the British force returned to Amherstburg on the 25th. Colonel MAITLAND hoped that this repulse would check the " law- less banditti," who harassed his men by keeping them "perpetu- ally in expectation of attack."

a The last three nights, I have been obliged to keep the soldiers in readiness to move at a moment's call. Last night, from reports I received, I had every reason to expect that I should have been attacked at Anaherstburg, by a force said to be collected, amounting to ftinn 1,500 to 2,000 men, at Munroe and in that neighbourhood. From the creditable sources I derived these accounts, it obliges me to be, I may say, in hourly expectation of the advance of the rebels ; but I regret to say, they do no more than repeat those threats, and which will, no doubt, continue until the ice breaks up, which at present in this neighbour- hood is firm from the opposite shore all round us. Should they have the teme- rity to try an attack, I am in every way prepared fur them."

The mode of warfare here described resembles that which the Americans kept up during the war of independence; and we find from Colonel MAITLAND'S despatch, that the " banditti " were citi- zens of the United States—an important circumstance, which the Colonel especially notices.

"The individuals dislodged from Fighting Island by the Queen's troops are chiefly American citizens ; and further, the arms in their possession, a few stands of which were captured, are new United States muskets, and marked accordingly; and, strange to say, on the evacuation of the island by these people, it is a remarkable fact, that they were permitted to return to the Ameri- can shore, when they formed in line, and opened a fire from thence on her Ma- jesty's troops, and this without obstruction on the part of the American autho- rities. NV hatever may be the professed desire to preserve the neutrality be- tween Great Britain arid the United States, or the orders given for enforcing it, my opinion is, that the conduct of the authorities in this instance partakes more of connivance at the outrages daily practised under their own eyes, than of the smallest effort to prevent those occurrences so much to be complained of."

Within a few idays after the affair in Fighting Island, Colonel MAITLAND learned that a party of invaders front Sandusky Bay bad taken possession of Pele Island, in Luke Erie, about forty miles from Amherstburg and twenty from the Canadian shore. Having ascertained that the ice was strong enough to bear the troops, Colonel MAITLAND, with five companies of regulars, a party of militia, some cavalry, and two pieces of cannon, advanced by daybreak on the 3d of Marcia to drive them from the island. He sent two companies under Captain BROWN to the south of the island, to intercept retreat to the United States coast; and landed with the rest of his force on the north. The rebels (as they are incorrectly called--for they were not British subjects) were about five hundred strong. On the approach of the British, they fled to the woods; where they rallied, and advanced in a line of about 300 men towards the southern part of the island, where they encountered Captain BROWN'S force. Here there was some smart fighting: the Americans evinced bravery, but they were driven into the woods at the point of the bayonet. The account in this part is not quite clear, but it would seem that the greater mid the Americans ultimately forced their way, and that the Brit' were checked; fur the former carried off a number of alitesii wounded men- " On the road, inside of the wood, the rebels had a number of althea., a, which means they succeeded in carrying away about forty of their vie men ; the others succeeded in escaping at the southernmost point of the isulasi and got over to the American coast ; leaving killed on the spot their corm ing officer—a Colonel Bradley, a Major Howdley, and Captains Van Remelt and M‘Keon, and several others. Some prisoners were taken, several oftee ar- m

were severely wounded."

The British loss in this action Captain MAITLAND admits to hate been considerable-

" I regret to say, that the taking of this island has not been 'gained withont considerable loss on our part ; and I have to request that you will report for ha Excellency's information, that thirty soldiers of the Thirty-second Regiat fell in this affair, two of whom were killed,;the others, some dangerously, %me severely wounded. I sincerely regret the loss of so ninny brave sadists ; and feel it the more when I reflect they did not fall before an honourable enemy, butiunaer

the fire of a desperate gang of murderers. •

" I trust this second repulse on this frontier of the American banditti (let it be understood that I have it from satisfactory authority that the whole of the gang driven from Pele Island are American citizens) will be a lesson to then that they are not longer with impunity to hold British territory. " A large tri-coloured flag, with two stars and the word Liberty' worked upon it, and eleven prisoners, were taken, some of whom state they sere formerly on Navy Island. About forty American muekets, some ammunition, molds, &e. were also taken.

" I am informed by the prisoners, that it was the decided intention of tam people to land on the Canadian shore and march upon Amherstburg, destroying by fire on their way all the houses, &c. they had to pass' and for which ii shigh-loade of American citizens, from Sandusky Bay, had joined them the night previous to may attack, and made their escape back again immediately% my appearance in front of the island."

Here ends the news of actual warfare. The neat document ts which we direct attention is the farewell speech of Governor REA on the occasion of proroguing the Legislature of Upper Canada. It is a characteristic production, and affords fresh cause for re. gret that this flighty gentleman should ever have been commis. sioned by our Colonial Office to play the part of a statesman and ruler. At a time when it is particularly desirable to avoid all that may give unnecessary offence, and nourish the seeds of dis- cord between England and the United States, this hair-brained person puts forth officially a vehement attack upon the Americas authorities, and takes it upon himself especially, but most ease cessarilv, to defend the destruction of the Caroline. A few ex- tracts from this lengthy document will exhibit its style and ternper. " When it is considered that Upper Canada is an integral portion of the British empire, and that the two countries are at this moment bound together by a solemn treaty of peace, the faithless attack of the citizens of the United States upon the province, after it had completely quelled a slight domestic in- surrection, will, if persisted in, excite feelings among the generous national Europe which will add but little to the character of Republican institutions; for surely the smile of a nation should not be more dreaded than its frown, or its extended hand be more fatal than its uplifted ann.

" When the facts just stated are clearly comprehended by intelligent met, how will the American citizens, who have so wantonly attacked the British empire, find it possible to explain that the province of Upper Canada required them to interfere in its concerns ?

" But it seems now to be admitted that our invaders have been deceived- that they falsely estimated the Canadian people ; and that they have at Ian learned that the yeomen, farmers, militia, Indians, and coloured population of of this province, prefer British institutions to Democracy. Nevertheless, an ex post facto excuse for the sinful and repeated invasion of the province, it is urged that the crew of the Caroline steam-boat, which was captured more than fourteen days after Navy Island hail been forcibly taken from us, baselines ' assassinated,' and that an extraordinary outrage' has been committed upon the Americans by our militia, who SO ably and gallantly cut out that pirate vessel.

" In the history of this province, the capture of the Caroline (whoever might have been her crew) wail, I maintain, be respected by future ages, as a noble proof of the sincerity of the Canadian people to fulfil their engagements, by crushing a pirate force, which, in violation of existing treaties, was insulate; from a British island their American allies, and which General Arculariur, Governor Mason, Governor Marcy, the President, and Legislature of the Uoited States, had absolutely found too powerful for the executive force of the republic to control."

Sir FRANCIS HEAD has a notion, forsooth, that the defeat of the insurrection solves a great political problem- " The struggle on this continent between Monarchy and Democracy he been a problem which Upper Canada has just solved.

"it has been very strongly argued. men in England, that Democracy was the only form of government indigenous to the soil of America, and that Monarchy was a power which required here artificial support.

"With a view to subvert this theory, the whole of the Queen's troops were allowed to retire from the provinee ; and the result, as had been anticipated, was, that the people of Upper Canada were no sooner left uncontrolled, than they proclaimed themselves in favour of monarchical institutions. Surrouudei by temptations on almost every lode, they indignantly rejected them all : in a few hours they successfully put down insurrection in their own land ; and when American citizens, astoniehed and disappoitited at their loyalty, determined to fierce them to become Republicans, people of all religions and of all politics rushed to the frontier to die in defence of their glorious constitution.

The conduct of the militia of Upper Canada attracted the attention of the gallant and loyal inhabitants of New Brunswick and Nova Scotia ; whose Legislatures have done themselves, as well ari this province, the honour of promptly rep, cooing their unqualified approbation of the attachment which has been evinced here to the British constitution.

"When these facts shall arrive before the English people, and when they shall also have taken into their consideration tlfe devoted and unalterable attach- meet which the British population of Lower Canada have evinced fur our revered institutions, surely they will come to the conclusion that the concurrent opinions of her Majesty's North American colonies, respecting the relative ad. vantages between Monarchy and Democracy in America, must be sounder than their own can be, inasmuch as eye-witnesses Judge more correctly than people can possibly do who are living 4,000 miles off. * • • "Lastly, the British people will. I trust, observe with considerable alarm, 4„.,the leading advocates for organic changes in our institutions are either at °meat lying in our gaols as traitors, or, from having absconded, are self- imed from the province,—in short, that their pretended efforts to obtain in .,71, C ads what they call liberty for the people,' has ended in a most in- nim'Pla-u-sagnad selfinterested attempt to plunder private property, to rub the banks, sad to burn to ashes the rising capital of their country.'

The affair

of the Caroline, which Sir FRANCIS HEAD thinks he s settled by a few declamatory sentences, has been the subject ha of a grave correspondence at Washington between the British Ambassador. Mr. Fox, and the United States Foreign Secretary, r. FoltsYTH- Mr. Fox sent to Mr. FORSYTH the British account of the seizure, with sundry confirmatory dtcuments, adding— di The piratical character of the steam-boat Caroline, and the necessity of aelf.defence and self.preservation under which her Majesty's subjetts acted in doming that vessel, would seem to he sufficiently established. 0 At the time when the event happened, the ordinary laws of the United saws were not enfoteed within the frontier district of the State of New York. The authority of the law was overborne publicly by piratical violence; through tech violence her Majesty's subjects in Upper Canada had already severely offered, and they were threatened with still further injury and outrage. This eitroordioary state of things appears, naturally and necessarily, to have im- pelled than to consult their own security by pursuing ad destroying the vessel Of their piratical enemy wheresoever they might find her."

Mr. FORSYTH replies, that lie has documents giving a very dif- ferent colour to the affair, and that his Government mean to take the matter up very seriously

" Thestatement of the facts which these papers present is at variance with the information communicated to this Government respecting that transaction ; but it is not intended to enter at present upon an examination of the details of theme, as steps have been taken to obtain the fullest evidence that can be had of the particulats of the outrage; upon the receipt of which, it will be matle the tabled of a formal complaint to the British Government for redress. Even admitting that the documents transmitted with your note contain a cor- rect statement of the occurrence, they furnish no justification of the aggression animated upon the territory of the United States—an aggression which was the more unexpected, as Sir Francis Head, in his speech at the opening of the Pediment of Upper Canada, had expressed his confidence in the disposition of di. Government to restrain its citizens from taking part in the conflict which was raging in that province; and added, that having communicated with the Government of the State of New York, and with yourself, he was then waitiog for replies. lt is not necessary to remind you, that his expectations have been met by the adoption of measures on the part of the United States, as prompt and cigarette as they have been successful in repressing every attempt of the in- habitants of the frontier states to interfere unlawfully in that contest. The met serious obstacle thrown in the way of those measures was the burning of the Cookie, which, while it was of no setvice to her Britannic Majesty's cause in Canada, had the natural efftct of increasing the excitement on the border, which this Government was endeavouring to allay."

In addition to all this, time is the boundary question to be set- tled. It seems pretty clear, then, that Lord DURHAM has more of real and not very easy work in prospect, than his Tory detractors are willing to allow. Independently of internal disputes in the provinces, he will be involved in an ugly dispute with the Govern- ment of the United States.