Unknown to W. Seawell, June 8, 1861

Col. W. SEAWELL, Sixth Infantry, Commanding Benicia Barracks, Cal. :

SIR: The general commanding the department has been advised that the steamer Diana, now lying at Benicia, has recently been under consideration by certain persons with a view to fit her up with an armament to be employed, as is suspected, for unlawful purposes against the

Government or commerce of the country. He desires that you will have this vessel under the special observation of some officer now at hand, and instantly report any suspicious movements about her.

Very respectfully, your obedient servant,