WASHINGTON CITY, Saturday, April 20, 1861.

Hon W. H. SEWARD,

Secretary of State:

SIR: I inclose you a letter coresponding very nearly with one I addressed to you one week ago (13th of April), tow hich I have not had any reply. The letter is simply one of inquiry in reference to facts concernig which I think I am entitled to an explantion. I have not adopted any opinion in reference to them which may not be modified by explanation, nor have I affirmed inthat letter, nor do I in this, any conclusion of my own unfavorable to your integrity in the whole transaction. All that I have said and mean to say is, that an explanation is due from you to myself. I will nto say what I shall do in case this request is not complied with, but I am justified in saying that I shall feel at liberty to place these letters before any person who is entitled to ask an explanation of myself.

Very respectfully,

JOHN A. CAMPBELL,

Associate Justice of the Supreme Court of the United States.

No reply has been made to this letter, April 24, 1861.

MONTGOMERY, ALA., May 7, 1861.

General DAVIS,

President of the Confederate States:

SIR: I submit to you two letters that were addressed by me to Honorable William H. Seward, Secretary of State of the United States, that contain an explanation of the nature and result of an intervention by me in the intercourse of the commissioners of the Confederate States with that officer. I considered that I could perform no duty in which the entire American people, whether of the Federal Unonfederate States, were more interested than that of promoting the counsels and the policy that had for their object the preservation of peace. This motive dictated my intervention. Besides the interveiwe referred to in these letters I informed the Assistant Secretary of State of the United States (not being able to see the Secretary), on the 11th of April ultimo, of the existence of a telegram of that date from General Beauregard to the commissioners, in which he informed the commissioners that he had demanded the evacuation of Sumter, and, if refused, he would proceed to reduce it. On the same day I had been told that President Lincoln had said that none of the vessels sent to Charelston were war vessels, and that force was not to be used in the attempt to supply the fort. I had no means of testing the accuracy of this information, but offered that if the information was accurate I would send a telegram to the autho; rieties at Chareslton, and that it might prevent the disastrous consequences of a collision at that fort between the opposing forces. It was the last effort that I would make to avert the calamity of war. The Assistant Secretary promised to give the matter attention, but I had no other intercourse with him or any other person on the subject, nor have I had any reply to the letters submitted to you.

Very respectfully,

JOHN A. CAMPBELL.

[1.]

WAR DEPARTMENT, C. S. A.,

Montgomery, May 9, 1861.

His Excellency JOSEPH E. BROWN,

Governor of Georgia:

SIR: Your letter of the 4th of May was received yesterday, and should have been answered by return mail but for the pressure of engagements during the day. I assure Your Excellency I profoundly appreciate the solicitude you feel in regard to the coast defenses of Georgia, but they have not escaped my attention. Prior to the receipt of your letter on the 4th of May, General Lawton's command was extended to embrace the coast, and he was rodered to report all necessary defenses. So soon as this report is received here no time executing the measures recommended for the security of your citizens. Should it be reuqired to make special requisition upon Your Excellency for troops in this connection it will be done.

Respectfully,

L. P. WALKER.

[6.]