practical tendencies, so far as they have been determined. It must be remembered, however, that, although the savage spirit of revenge, that eagerly demands blood for blood without the slightest consideration of the anatomical, physiological or psychological conditions upon which the commission of the specific act depends, has ceased to be the controlling factor in the enactment and execution of penal codes, the new system of jurisprudence, based upon more enlightened conceptions of human responsibility, is still in an inchoate state and very far from having worked out a satisfactory solution of the intricate problem of the origin and nature of crime and its proper penalty. In 1386, an infanticidal sow was executed in the old Norman city of Falaise, and the scene was represented in fresco on the west wall of the Church of the Holy Trinity in that city. This curious painting no longer exists, and, so far as can be ascertained, has never been engraved. It has been frequently and quite fully described by different writers, and the frontispiece of the present volume is not a reproduction of the original picture, but a reconstruction of it according to these descriptions. It is taken from Arthur Mangin’s _L’Homme et la Bête_ (Paris, 1872), of which all the illustrations are more or less fancy sketches. A full account of the trial and execution is given in the present volume. The iconographic edition of Jocodus Damhouder’s _Praxis Rerum Criminalium_ (Antverpiæ, 1562) contains at the beginning of each section an engraving representing the perpetration of the crimes about to be discussed. That at the head of the chapter entitled “De Damno Pecuario” is a lively picture of the injuries done by animals and rendering them liable to criminal process; it is reproduced facing page 161 of the present work. The most important documents, from which our knowledge of these judicial proceedings is derived, are given in the Appendix, together with a complete list of prosecutions and excommunications during the past ten centuries, so far as we have been able to discover any record of them. The bibliography, although making no claim to be exhaustive, comprises the principal works on the subject. Articles and essays, which are merely a rehash of other publications, it has not been deemed necessary to mention. Such, for example, are “Criminalprocesse gegen Thiere,” in _Miscellen aus der neuesten ausländischen Literatur_ (Jena, 1830, LXV. pp. 152-55), Jörgensen’s _Nogle Frugter af mit Otium_ (Kopenhagen, 1834, pp. 216-23); Cretella’s “Gli Animali sotto Processo,” in _Fanfulla della Domenica_ (Florence, 1891, No. 65), all three based upon the archival researches of Berriat-Saint-Prix and Ménabréa, and Soldan’s “La Personification des Animaux in Helvetia,” in _Monatsschrift der Studentenverbindung Helvetia_ (VII. pp. 4-17), which is a mere restatement of Osenbrüggen’s theory.