In the task of reorganizing the army after Bull Run, of clearing Washington of fugitives, and of extracting order from chaos, Mr. Chandler rendered important aid to the authorities, and after the adjournment returned to Michigan and threw his strong energies into the work of raising and equipping troops. This letter (which was not followed by any practical results, owing to various causes) is of interest as showing the spirit of those days: DETROIT, Aug. 27, 1861. _Hon. Simon Cameron, Secretary of War._ MY DEAR CAMERON: A Colonel Elliott, member of the Canadian Parliament, is desirous of raising a regiment of Canadian cavalry for the war against treason. I don't know how the Administration may look upon this proposition, but there are many reasons in favor of its acceptance. 1. Colonel Elliott is a brave and experienced officer. 2. He is in favor of the closest union between the Canadas and the United States, and believes that this fraternal union upon the battle-field would tend strongly to cement a yet closer connection. 3. It would satisfy England that hands-off was her best policy. The moment it is proven that black men are used in the Southern army _against us_, I propose to recruit a few regiments of negroes in Canada myself to meet that enemy, and I think this would be an opening wedge for the movement of emancipation. My colleague will introduce Colonel Elliott to you and explain more at length. Truly, your friend, Z. CHANDLER. To this same period also belongs this characteristic defense of his State and the Northwest against what Mr. Chandler believed--and with reason--to be an unjust statement: _To the Editor of the New York World_: