Note 438 — Chapter IX · ON CONCRETIONS, SPICULES, AND SPICULAR SKELETONS

Cf. Faraday, On Ice of Irregular Fusibility, Phil. Trans., 1858, p. 228; Researches in Chemistry, etc., 1859, p. 374; Tyndall, Forms of Water, p. 178, 1872; Tomlinson, C., On some effects of small Quantities of Foreign Matter on Cry­stal­li­sa­tion, Phil. Mag. (5) XXXI, p. 393, 1891, and other papers.