...s) relative to the order for the advance of General Whiting and his force, to co-operate with our army at Drury's Bluff. The message, as Mr. Davis calls the preceding letter, may have been borne by Colonel Samuel Melton , though General Beauregard has no recollection of the fact; but, by whomsoever delivered to the President, it certainly is the only trustworthy evidence bearing upon the subject. What Colonel Melt...