Abstract
SOME months ago, through the kindness of Messrs. Alexander Agassiz and S. H. Garman, some of the volcanic ashes which fell in Dominica on January 4 were placed at my disposal. On account of the notices that have appeared in NATURE (vol. xxi. pp. 330, 372, and vol. xxii. p. 77) and in Comptes rendus (xc. 622–26), this note would be needless, were it not that some may regard these ashes as of recent origin.
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