Abstract
IN the review in NATURE of August 16 of the above book by Dr. Harker, which was recently published posthumously, attention is directed to certain omissions in a Table of Formations which was added to Dr. Harker's original manuscript. Perhaps I may be allowed to explain that the Table was drawn up as an adjunct to the stratigraphy as set out in the text, in order to serve as a handy means of reference for the non–professional reader, for whom the book was primarily written, and also for geologists not conversant with the local details. As a matter of fact, Dr. Harker found occasion in the text to refer to almost all the geological systems and their subdivisions, and in this way has drawn a picture of the stratigraphy which is essentially complete. Since he did not mention certain subdivisions of the Jurassic system which are represented somewhat meagrely, namely, the Kimmeridgian (which is specially referred to in the review), and the Corallian, Callovian and Cornbrash, these were purposely omitted from the Table of Formations. Similarly, the Durness Limestone was placed in the Cambrian, because this long–established British custom was followed by Dr. Harker in the text. It appeared to raise too many complications, and indeed to be unnecessary in this book, to direct attention to the fact that the custom requires modification.
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RICHEY, J. “The West Highlands and the Hebrides”. Nature 148, 412 (1941). https://doi.org/10.1038/148412b0
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DOI: https://doi.org/10.1038/148412b0
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