Mr. Readwin stated that since reading his former paper (Mill Mag., No. 5), he had visited the museums of Copenhagen, Stockholm, Christiania, Kongsberg, and London, in search of corroborative evidences of “Recent Mineral-growth at ordinary temperatures, under ordinary conditions,” and that he was satisfied that mineral “growth under ordinary conditions,” is not of unusual occurrence, .although, hitherto, neither generally observed, nor believed.

Mr. Readwin also stated that several of the specimens referred to in his former paper, some of which he took on his journey, exhibited changes and developments during his absence.

In conclusion, Mr. Readwin submitted an idea of Metal-growth more closely at home.