Union Counties, at the request of General Boyle. Governor Morton has gone with him.

W. R. HOLLOWAY,

Governor's Private Secretary.

Honorable E. M. STANTON, Secretary of War.

Numbers 2.

Report of Brigadier General William K. Strong, U. S. Army, commanding District of Cairo.

HEADQUARTERS DISTRICT OF CAIRO, Cairo, Ill., July 19, 1862.

SIR: I have received telegraph this morning from General Boyle, dated Louisville, 18th, saying:

Henderson is taken by rebels. Governor Morton telegraphs Newburg, Ind., taken and 200 stand of arms. Can you send force to Henderson? Order gunboat up the river.

Also telegraph this morning from commander of post Evansville confirming above, and adds-

Also rebels have taken possession of the hospitals and have fired into passing steamer.

There is no gunboat here to send nor any force to spare. I have seen Captain Wise, of the Navy, and he has ordered the receiving boat Clara Dolson fired up. There are some 150 sailors on board that he can arm and he will put on some half dozen navy howitzers and ammunition, with arms for the men, and I shall put on board 200 infantry, well armed, with six days' rations. There will also go a small tug in company, with a howitzer or two. This is all we can do here.

I dispatch my aide, Lieutenant-Colonel Holt, with this, to suggest to you the importance of your doing all you can in the emergency to drive back or capture these marauding rebels. You have plenty of transportation. Now, if you can, spare for a few days two or three companies of cavalry, a battery of artillery, and three or four companies of infantry, well armed and rationed for five or six days and proceed at once to the points captured. If you cold not spare all indicated above spare all you can, and if you cannot go yourself send Colonel Duff or some other brave officer and have those marauders wiped out in quick-time. I hope you will agree with me as to the propriety of prompt action. There is no communication to-day by telegraph to Saint Louis, therefore all we can do in the emergency is to act upon our own judgment. I have contributed all I could to the expedition and hope you will do the same on your part promptly.

I inclose you copies of telegrams received by me.

Very respectfully, your obedient servant,
WM. K. STRONG,

Brigadier-General, Commanding.

Brigadier-General QUINBY, Columbus, Ky.

[Inclosure.]

LOUISVILLE, 18th, 1862.

UNITED STATES COMMANDER, Cairo:

Henderson is taken by the rebels. Governor Morton telegraphs New-