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Nature volume 70, pages 301302 (28 July 1904) | Download Citation



IN the course of his attempt to solve the puzzle of the homologies of the cusps in the more complicated types of ungulate molars, the author of this bulky memoir takes the opportunity of directing attention to certain points with regard to mammalian dentition in general, and also comments on the exceeding intricacy and difficulty of several of the problems presented thereby. The solution of one difficulty, he observes, not unfrequently gives rise to a whole crop of fresh problems, and, paradoxical as it may seem, every increase in our knowledge serves only to reveal the depth of our ignorance.

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