measure.----The expedition which sailed in July last to the Klamath and Umpqua rivers, has returned to San Francisco. It has been ascertained that the Klamath and Trinity unite, and form the river which discharges its waters into the sea, in latitude 41° 34´ north, and that there is no river answering to the description of the Klamath, in 42° 26´, as laid down in the charts of Frémont and Wilkes. From this river, the expedition visited the Umpqua, which they found to have an opening into the sea, of nearly one mile in width, with some three or four fathoms of water on the bar, and navigable about thirty miles up, when it opens into a rich agricultural district. * * * * * From OREGON our advices are to Sept. 2. There is no news of general interest. The country seems to be steadily prosperous. New towns are springing up at every accessible point, and a commercial interest being awakened that is highly commendable. The frequency of communication by steam between California and Oregon strongly identifies their interests. * * * * * From ENGLAND there is no intelligence of much interest. The reception of Baron Haynau by the brewers of London has engaged the attention, and excited the discussion of all the organs of opinion in Europe. Most of the English journals condemn in the most earnest language the conduct of the mob, as disgraceful to the country, while only a few of them express any special sympathy with the victim of it. The London _Times_ is more zealous in his defense than any other paper. It not only denounces the treatment he received at the hands of the English populace, but endeavors to vindicate him from the crimes laid to his charge, and assails the Hungarian officers and soldiers in turn with great bitterness. In its anxiety to apologize for Haynau, it asserts that English officers, and among them the Duke of Wellington and General Sir Lacy Evans, committed acts during their campaigns quite as severe as those with which he is charged. This line of defense, however, avails but little with the English people. The public sentiment is unanimous in branding Haynau as one of the most ruthless monsters of modern times, and the verdict is abundantly sustained by the incidents and deeds of his late campaigns. After his expulsion from England he returned to Austria, being received with execrations and indignities at several cities on his route.----Further advices have been received from the Arctic Expedition sent in search of Sir John Franklin, but they contain no satisfactory intelligence. A report, derived from an Esquimaux Indian whom Sir John Ross met near the northern extremity of Baffin's Bay, states that in the winter of 1846 two ships were broken by the ice a good way off from that place, and destroyed by the natives, and that the officers and crews, being without ammunition, were killed by the Indians. The story is very loosely stated, and is generally discredited