After so profound and comprehensive a view of the progress of human society in the past, of which the future can only be a prolongation, it is natural to ask, to what use does he put this survey as a basis of practical recommendations? Such recommendations he certainly makes, though, in the present Treatise, they are of a much less definite character than in his later writings. But we miss a necessary link; there is a break in the otherwise close concatenation of his speculations. We fail to see any scientific connexion between his theoretical explanation of the past progress of society, and his proposals for future improvement. The proposals are not, as we might expect, recommended as that towards which human society has been tending and working through the whole of history. It is thus that thinkers have usually proceeded, who formed theories for the future, grounded on historical analysis of the past. Tocqueville, for example, and others, finding, as they thought, through all history, a steady progress in the direction of social and political equality, argued that to smooth this transition, and make the best of what is certainly coming, is the proper employment of political foresight. We do not find M. Comte supporting his recommendations by a similar line of argument. They rest as completely, each on its separate reasons of supposed utility, as with philosophers who, like Bentham, theorize on politics without any historical basis at all. The only bridge of connexion which leads from his historical speculations to his practical conclusions, is the inference, that since the old powers of society, both in the region of thought and of action, are declining and destined to disappear, leaving only the two rising powers, positive thinkers on the one hand, leaders of industry on the other, the future necessarily belongs to these: spiritual power to the former, temporal to the latter. As a specimen of historical forecast this is very deficient; for are there not the masses as well as the leaders of industry? and is not theirs also a growing power? Be this as it may, M. Comte's conceptions of the mode in which these growing powers should be organized and used, are grounded on anything rather than on history. And we cannot but remark a singular anomaly in a thinker of M. Comte's calibre. After the ample evidence he has brought forward of the slow growth of the sciences, all of which except the mathematico-astronomical couple are still, as he justly thinks, in a very early stage, it yet appears as if, to his mind, the mere institution of a positive science of sociology were tantamount to its completion; as if all the diversities of opinion on the subject, which set mankind at variance, were solely owing to its having been studied in the theological or the metaphysical manner, and as if when the positive method which has raised up real sciences on other subjects of knowledge, is similarly employed on this, divergence would at once