Mr. Seward to Lord Lyons.

My Lord: I have read with interest the communication, a copy of which you were so kind as to show me, from the British agent at Fort Garry to the governor general of Canada, relative to the supposed supply of arms to Sioux Indians by British authorities. Please do me the kindness to express my thanks to Lord Monck for the information contained in the communication referred to.

I have the honor to be, with high consideration, your lordship’s obedient

WILLIAM H. SEWARD.

Right Hon. Lord Lyons, &c., &c., &c.