From Washington.
[special Correspondence of the Dispatch.]On the other hand, Seward now declares he has no proposal of any sort to offer, and the President evinces a fixed intention to "pitch" into South Carolina. So we may look for hostilities at any moment. Once begun, the war will inevitably become sectional. Neutrality in either section will be impossible.
Private dispatches were received yesterday by Alabama members, asserting that the returns showed a majority of 15 for immediate secession, instead of 10 majority for co-operation, as stated in the papers of day before yesterday.
A number of members of the Virginia Legislature are here. They come mainly from the northwestern part of the State, and report the people there entirely sound in their devotion to the cause of the South. Gen. August, of your city, after spending a few days here, has gone on to Baltimore.
Hamlin has certainly negro blood in his veins. I have seen a letter from a gentleman of high character in New Hampshire, giving the pedigree of Hamlin. His grandfather was a mulatto, and commanded a mixed company of negroes and Indians during the Revolution. He pocketed the pay of his company, sold the wine and other luxuries provided for the sick, and left the army in disgrace. One of Hamlin's uncles, or great uncles, was named Africa. There is a legend in the family to the effect that when Hannibal was an infant, in the cradle, his nurse overheard one of the relatives, who was the a gazing at the baby, exclaim, "For God's sake! will this d — d black blood never get out of the veins of our family." Members of Congress who served with Hamlin, when he was in the House, say they always knew he had a streak of negro in him. This is pleasant. Zed.