Published online by Cambridge University Press: 01 May 2009
Amongst others found by Dr. H. K. Warth, the particular pebble referred to was picked up by its discoverer on the 10th of June, 1886, in about lat. 32° 48' N. and long. 73° 15' E. Its size is 3¼ inches by 2¼ by 2 inches; and its weight is 10¼oz. The material is felsitic rock, the colour reddish-brown, and its density= 2·608 (that of albite being 2·59—2·64).
2 See Geol. Mag. Decade III. Vol. III. p. 232, 1886Google Scholar. The specimen itself is in the Museum of the Department of Science and Art in Dublin, and the enlarged photograph referred to was presented to the Geological Society, London.