This continues a previous report [see 1 of “References” at end of paper]. Three papers, previously named as in preparation, have now appeared [2, 3, 4]. Study of travel‐times for southern California has been rounded off by a paper on minor phases [5]. Certain waves reflected at the 33‐km level are strong over limited ranges of distance, in accordance with theoretical expectation.
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Gutenberg et al. (1945) studied this question.
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