The measurements of this paper correct some erroneous impressions which the public generally have. We always supposed, for instance, that the heads of Judge Marshall and Mr. Calhoun were unfavourable to the phrenological doctrine, as being quite small; but it seems they are actually large; and, though narrow, the region of Ideality capable of containing a more than usual quantity of brain. The largest head in the list is that of Daniel Webster, but it is not most to our liking, for there is a goodly share in the animal region; and though he has “most brains of the bunch,” they are not of the very choicest kind. Phrenologists, looking over these measurements, and without regarding the names, would say that the best head was No. 7, belonging to Judge M’Lean, because it is full in the upper or moral region; Firmness, and its neighbouring Veneration, are large; they would call it a well-balanced head, and conclude that its great intellectual power would not be made a pander to the animal propensities. (We ourselves should prefer it; but, lest we should be suspected of a political bias in favour of the latter, we avow that our vote is for Daniel, _malgré_, his occiput.) The next heads, in the order of size, are Judges Baldwin, Marshall, Trimble, and Johnson; Messrs. Cheeves, M’Duffie, Wirt, Adams, (a quartetto of the same size); next, Clay, Van Buren, Calhoun, and Southard. We have stated that we are candid enquirers into the nature of phrenology; we believe we are so; and if the facts shown in this paper are favourable to its pretensions, the fault is not ours, but nature’s; we admire and we adopt the motto of one of its lights, “_res non verba quæso_.” It would have been as easy for us to seek for, and to set forth, opposing arguments and facts; and we should have done it in the spirit of the motto just quoted; but as the vast majority of men of learning, and almost all writers, are opposed to phrenology—as it is assailed every day by argument and ridicule—as its opponents are rather uproarious whenever it is seriously mentioned—we deem it but fair _audire alteram partem_. In plain truth, we are all, to a certain extent, phrenologists; and the disciples of Gall and Spurzheim have no right to claim for their masters the credit of originality, or for themselves the credit of peculiar and new views of nature. No age, since Aristotle, has been without its philosophers, who pointed out the brain as the organ by which the mind carried on its operations; and it is now generally admitted to be its primary and essential instrument.