The eleventh of April, 1861, revealed the real intention of the Southern people in their dastardly assault upon Fort Sumter. The thunder of Rebel cannon shook the air not only around Charleston, but sent its thrilling vibrations to the remotest sections of the country, and was the precursor of a storm whose wrath no one anticipated. This shock of arms was like a fire-alarm in our great cities, and the North arose in its might with a grand unanimity which the South did not expect. The spirit and principle of Rebellion were so uncaused and unprovoked, that scarcely could any one be found at home or abroad to justify them.