In his able article on the teratologic records of Chaldea, Ballantyne makes the following trite statements: "Credulity and superstition have never been the peculiar possession of the lower types of civilization only, and the special beliefs that have gathered round the occurrence of teratologic phenomena have been common to the cultured Greek and Roman of the past, the ignorant peasant of modern times, and the savage tribes of all ages.

Classical writings, the literature of the Middle Ages, and the popular beliefs of the present day all contain views concerning teratologic subjects which so closely resemble those of the Chaldean magi as to be indistinguishable from them.

Indeed, such works as those of Obsequens, Lycosthenes, Licetus, and Ambroise Pare only repeat, but with less accuracy of description and with greater freedom of imagination, the beliefs of ancient Babylon.

Even at the present time the most impossible cases of so-called 'maternal impressions' are widely scattered through medical literature; and it is not very long since I received a letter from a distinguished member of the profession asking me whether, in my opinion, I thought it possible for a woman to give birth to a dog.

Of course, I do not at all mean to infer that teratology has not made immense advances within recent times, nor do I suggest that on such subjects the knowledge of the magi can be compared with that of the average medical student of the present; but what I wish to emphasize is that, in the literature of ancient Babylonia, there are indications of an acquaintance with structural defects and malformations of the human body which will compare favorably with even the writings of the sixteenth century of the Christian era." Many reasons were given for the existence of monsters, and in the Middle Ages these were as faulty as the descriptions themselves.