The two preceding lists of this series will be found at the ends of vols, xi ahd xii of this Magazine. A few earlier names, omitted from Dana's ‘System of Mineralogy’ (6th edit., 1892) and Chester's ‘Dictionary of the Names of Minerals’ (1896), are included. Certain less accessible names, more especially in Russian literature, have been very kindly supplied by Professor W. Vernadsky, of Moscow. The original spelling of a name, as printed on the page cited, is added in parentheses whenever it differs from the spelling adopted in this list ; the case-endings of Russian names have, however, been altered to the nominative.