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CELLEPORA, several species, and allied sub-generic forms, 48, St Cruz 50. ESCHARA, 30, Tierra del Fuego 53. ESCHARA, 48, St Cruz R. 50. RETEPORA, 40, Cape Horn. RETEPORA, 100, Cape of Good Hope 34, Quoy and Gaimard, "Ann. Scien. Nat." tome vi., page 284.
HOOKER, vol. i. p. 107; vol. ii. p. 54. KNORR found them at Japan; and it is affirmed that they abound in islands farther to the eastward. M. GAY encountered them in Chili. It is very doubtful, however, whether all these are to be referred to one species. M. DE BLAINVILLE, under H. Ceylanica, in the Dict. de Scien.
W. Ellis informs me, that he has noticed round several parts of Hawaii, beds of coral-detritus, about twenty feet above the level of the sea, and where the coast is low they extend far inland. See also MM. Quoy and Gaimard in "Annales de Scien. Mr. Mr.
That is to say, the surfaces of the lava-streams are not at all, or only slightly, decomposed into soil suitable for the growth of plants, except in rare instances. E. G. Hull, "On the Domite Mountains of Central France," Scien. Proc. Roy. Dublin Society, July 1881, p. 145. Dr. Hull determined the density of the domite of the Puy de Dôme to be 2.5, while that of lava is about 3.0.
Jurin, at the end of Dr. Smith's Optics; M. Æpinus, in the Nov. Com. Petropol. V. 10.; M. Beguelin, in the Berlin Memoires, V. II. 1771; M. d'Arcy, in the Histoire de l'Acad. des Scienc. 1765; M. de la Hire; and, lastly, the celebrated M. de Buffon, in the Memoires de l'Acad. des Scien. who has termed them accidental colours, as if subjected to no established laws, Ac. Par. 1743. M. p. 215.
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