Glaciation and Striation


In your issue of September 26. Dr. A. Irving asks whether in my plate 17 (Phil. Trans., Ser. B., vol. ccii) I have not overlooked the fact that the striations are on the original cortex of the flint nodule. My answer is that I have not done so; the striations are not on the original cortex of the flint nodule—as is clear both from my description of the specimen and from the carefully drawn figure.

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