The last publication of LOMBROSO and LASCHI, _Le Crime politique et les Revolutions, par rapport au droit, à l’anthropologie criminelle et à la science du gouvernement_ (Political Crime and Revolutions, in their Relation to Law, Criminal Anthropology, and the Science of Government) of which we here have a French translation, is, I will not say, the worst written, but the most confused work imaginable. Its arrangement is clear, but its examples are given without any order whatever. The facts presented are abundant, but they are taken rather too much at haphazard, and often too uncritically. The worst is that its very thesis is weak, badly formulated or elusive in places. What a pity it is that so much erudition should be expended, and so many valuable data be brought together without better success in displaying to the best advantage these riches, and also, let me say, without so many times having had occasion to appear so clearly in the wrong! M. Lombroso remains unmoved, unfortunately, in his high sounding and unqualified hypothesis of “diseased genius.” He continues to develop it and to defend it in this latest book of his, which is replete with instructive details, and which is undoubtedly the first considerable attempt at an etiology of revolutions and of political crime. The complex doctrine of Lombroso could be sufficiently summed up, if I am not mistaken, by uniting word to word—by the mathematical sign of equality—philoneism (or the love of novelties) with the revolutionary spirit, the revolutionary spirit with genius, genius with insanity, insanity with criminality, and criminality, finally, with progress. But what a detestable thing progress would then be! We should have to protect ourselves against it as we do against a pestilence. The evolution of societies does not take place without great waste and loss, as we all know. It should be carefully shown what these losses are. The study of the conditions of social progress ought to be made in greater detail than is here found. The terms of the imagined equation, which here hovers before our eyes, should in fine, if any comparison is to be effected between them, be subjected to a much more exact quantitative and qualitative analysis.