"Captain Stanard brought down a specimen of native copper, similar to the piece of forty-nine pounds weight in your cabinet. It was at De l'Isle, fifteen leagues on the north shore from Fond du Lac."

Mr. John T. Blois, of Detroit (Sept. 20th), informs me that he is preparing a Gazetteer of Michigan. "Of the topics," he remarks, "I had proposed to submit to your consideration, one was the etymology of the Indian nomenclature, to the extent it has been adopted in the application of proper names to our lakes, rivers, and other inanimate objects. In the preparation of my work, this subject has frequently presented itself to my mind as one of interesting importance, and whose development is more auspicious, at the present time, than it may be at a future day. I had a particular desire to rescue the Indian names from that oblivion to which the negligence of the early settlers of other States has permitted them to descend, by the substitution, for no reasonable cause, of insignificant English or French names, without regard to either good taste or propriety.

"I wish, among other things, to ask of you the favor to inform me of the origin and signification of the name of our adopted State, Michigan."

A correspondent at Detroit (J.L.S.) writes (21st Sept.): "Bills have been introduced into both Houses to carry out the President's sub-treasury system, and 'tis said Calhoun will support the measure. These bills, which were introduced by Wright and Cambreleng, propose that treasury notes shall be issued not to exceed $12,000,000."

Mr. Palfrey (25th Sept.) suggests my reviewing Col. Stone's "Life of Joseph Brant," and the publishers (Geo. Dearborn and Co.) transmit me the proof sheets on sized paper. I sat down with enthusiasm to read them (as far as sent) preparatory to a decision. Many things are desirable, and most worthy of commendation. But there were some errors of fact and opinions, which I could not pass over without bringing forward facts which I felt no capacity to manage, without giving offence to one whom I had every reason to regard as a friend. Brant had been the scourge of my native State during all the long and bloody war of the Revolution; and his enormities had the less excuse to be plastered over on account of his having received a Christian education, and speaking and writing his own language. He was doubtless a man much above his red brethren generally, for mental conception and boldness. It is true, I had heard all the terrific details of his cruelties from the lips of my father, who was an actor in the scenes described, at an age when impressions sink deep. But I had outlived my youthful impressions, and felt disposed to regard him as one of the most celebrated individuals of his race, which race I had learned to regard as one of the peculiar types of mankind. But I thought it injudicious to lay the story of the Revolution on his shoulders--with the real causes of which his life had about as much to do as the fly on the wagon-wheel, in turning it. I therefore on broad grounds declined it.

The establishment of the University of Michigan and its branches over the State, now excited considerable attention, and I began to receive letters from various quarters on the subject. "At a meeting of the people of this county (Kalamazoo)," says A. Edwards, Esq., "very advantageous offers were made to the Board, in case it was by them deemed proper to establish here one of the two branches contemplated within the senatorial district."

Mr. Daniel B. Woods, Dorchester, Mass., writes me respecting an article for the "Christian Keepsake," which has passed to the hands of the Rev. Mr. Clark, of Philadelphia.

25th. Letters were received to-day from the Secretaries of the Presbyterian, and from the Methodist Boards of Missions at New York, proposing the establishment of missions for the Ottawas and Chippewas, under the fourth article of the treaty of 1836. I advised Mr. Lowry, the organ of the former, and also the Methodist Society, to select positions south of this island in Lake Michigan.

27th. The first snow falls for the season.

30th. The chiefs of the Ottawas at L'Arbre Croche request that I would procure and send them vaccine matter, having heard that the small-pox existed at Grand River, and at Maskigo,