Such was the condition of the parties when the Democratic national convention met at Charleston, S. C., on the 23d of April, 1860, it being then the custom of the Democratic party, as it is of all majority parties, to call its convention first. It was composed of delegates from all the thirty-three States of the Union, the whole number of votes being 303. After the example of former Democratic conventions it adopted the two-third rule, and 202 votes were required to make nominations for President and Vice-President. Caleb Cushing, of Mass., presided. From the first a radical difference of opinion was exhibited among the members on the question of slavery in the Territories. Almost the entire Southern and a minority of the Northern portion believed in the Dred Scott decision, and held that slave property was as valid under the constitution as any other class of property. The Douglas delegates stood firmly by the theory of popular sovereignty, and avowed their indifference to the fact whether it would lead to the protection of slave property in the territories or not. On the second day a committee on resolutions consisting of one member from each State, selected by the State delegates, was named, and then a resolution was resolved unanimously “that this convention will not proceed to ballot for a candidate for the Presidency until the platform shall have been adopted.” On the fifth day the committee on resolutions presented majority and minority reports. After a long discussion on the respective merits of the two reports, they were both, on motion of Mr. Bigler, of Pennsylvania, recommitted to the Committee on Resolutions, with a view, if possible, to promote harmony; but this proved to be impracticable. On the sixth day of the Convention (Saturday, April 28th,) at an evening session, Mr. Avery, of North Carolina, and Mr. Samuels, of Iowa, from the majority and minority of the committee, again made opposite and conflicting report on the question of slavery in the Territories. On this question the committee had divided from the beginning, the one portion embracing the fifteen members from the slaveholding States, with those from California and Oregon, and the other consisting of the members from all the free States east of the Rocky Mountains. On all other questions both reports substantially agreed.