There are those in the land, who, for reasons suggested by President Buchanan, and for others, of darker omen, to which he makes no reference, do despair, or greatly fear. What with an honest hate of some public iniquities among us,--the tolerance and strengthening of which many of our politicians regard as the vital conditions of our national existence,--and a dread of the excesses incident to our large liberty, it is not strange that some of our own citizens should accord in sentiment with the London "Times." Probably the same proportion of persons may be now living among the native population of our national soil, appeared at the era of the Revolution, preferring English institutions to our own, and predicting that her government will outlast our own. Discussions raised upon the present aspect of affairs in either country will not settle the issue thus opened. A real knowledge of our own institutions and a reasonable confidence in their permanence are to be found only in an intelligent and very intimate acquaintance with their growth and development. In our histories are to be found the materials of our prophecies. We welcome, therefore, with infinite satisfaction, the two admirable volumes whose titles we have set down. For reasons which will appear before we conclude our remarks upon them, we find it convenient to unite their titles and to write about them together; but for distinctness of subject and marked individuality in the mode of treatment, no two books can stand more widely apart. Abilities and culture and aptitudes of the very highest order have been brought to the composition of each of them. An exhaustive use of abundant materials, and a most conscientious fidelity in digesting them into high-toned philosophical narrations, are marked features of both the volumes, and we will not venture upon the ungracious office of instituting comparisons, in these respects, between their authors. We must make a slight report of the story of each of them, and of the method and spirit in which it is told, and then confront them for mutual cross-examination.