this to the Norths and Dartmouths of the present day, with more and even stronger evidence of the coming events of November, 1860, would have been like speaking to the stones of the street. In November, 1860, they were thoroughly ignorant of all the momentous antecedents of secession--of their nature, their character, their bearing, import, and consequences." In the same correspondence the distinguished Rebel emissary substantially let out the fact that Calhoun was indirectly, through himself (Mason), in secret communication with the British Government as far back as 1841, with a view to securing its powerful aid in his aforesaid unalterable resolve to Secede from the Union; and then Mr. Mason pleads--but pleads in vain--for the armed intervention of England at this later day. Said he: "In the year 1841 the late Sir William Napier sent in two plans for subduing the Union, to the War Office, in the first of which the South was to be treated as an enemy, in the second as a friend and ally. I was much consulted by him as to the second plan and was referred to by name in it, as he showed by the acknowledgment of this in Lord Fitzroy Somerset's letter of reply. This plan fully provided for the contingency of an invasion of Canada, and its application would, in eighteen or twenty months, have reduced the North to a much more impotent condition than it exhibits at present. At this very moment the most difficult portion of that plan has been perfectly accomplished by the South itself; and the North, in accordance with Sir William Napier's expectations, now lies helpless before England, and at our absolute mercy. Nor is there any doubt of this, and if Lord Palmerston is not aware of it Mr. Seward certainly is. We have nothing remaining to do but to stretch out our arm in the way Sir William Napier proposed, and the Northern power--power as we ignorantly call it--must come to an end. Sir William knew and well estimated the elements of which that quasi power consisted; and he knew how to apply the substantive power of England to dissolve it. In the best interest of humanity, I venture to say that it is the duty of England to apply this power without further delay--its duty to itself, to its starving operatives, to France, to Europe, and to humanity. And in the discharge of this great duty to the world at large there will not even be the dignity of sacrifice or danger."] Threats and counter-threats of Disunion were made on either hand by the opponents and advocates of Slavery-extension through annexation; nor was it less agitated on the subject of a Protective Tariff.