Mr. Seward to Lord Lyons.

My Lord: I have the honor to inform your lordship that it has become known to this government that the British steamer Will-o’-the-Wisp will this week leave Halifax in ballast for Bermuda, on account of the insurgents of the United States, and under the direction of their agents, now having harbor at Halifax. That, on arriving at Bermuda, she will take in ordnance and stores, for the use of the insurgents, and attempt to make her way into Wilmington, and that this proceeding will be under the direction of insurgent agents at Bermuda. By the President’s direction, I have to suggest for your lordship’s consideration the pro priety of advising the colonial authorities at Bermuda of this hostile proceeding, with a view that they may arrest it.

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

WILLIAM H. SEWARD.

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