Page:Quarterly Journal of the Geological Society of London, vol. 26.djvu/583

 As to the supposed Eozoon, he had not been able to recognize any of the characteristics of that fossil ; and by treating the Trinidad specimens with acid, he found no traces of structure left, and yet there had not been sufficient metamorphism to destroy other organisms. In some dredgings from the AEgean Sea he had found fragments of echinoderms and other organisms, in which a siliceous deposit had replaced the original sarcode in the same manner as had occurred in the Canadian Eozoon, thus proving the possibility of this form of substitution, which had been warmly contested.

Mr. Tate offered some suggestions as to the age of these beds, which were certainly older than Neocomian. The Californian gold- bearing beds appear to be Jurassic. Similar beds occurred in New Mexico, Guatemala, and were observed by him in Nicaragua and Costa Rica. These present lithological and mineralogical affinities to the Venezuelan and Trinitatian metamorphic series, and were conjectured to be of the same age.

5. On the Fall of an Aerolite in Fezzan. By M. Coumbary.

(Communicated by R. H. Scott, Esq., M.A., F.G.S.)

[Abstract.]

The object of this communication was to describe the fall of an aerolite or bolide, which look place on the 25th December, 1869, at Mourzouk, in Fezzan (lat. 26° N., long. 12° E. of Paris), in the presence of a group of Arabs. The bolide is described as a globe of fire nearly a metre in diameter, which, on falling, exploded with a sound resembling pistol-shots and a strong odour.

It is further stated that the whole or portions of the bolide will be forwarded — and that, according to information given, the poignards, sabres, and lances of the principal people of Waddai are constructed of meteoric iron, much of which has fallen in that district.

April 13th, 1870.

S. W. North, Esq., of Castlegate, York, was elected a Fellow of the Society.

The following communications were read :-

1. A letter from Dr. Gerard Krefft, dated Sydney, 29th January, 1869, accompanying a model of the left lower incisor of Thylacoleo carnifex, Owen, as restored by the author, and a cast of the original fragment which enabled the model to be made. Dr. Krefft referred as follows to the fossil remains of Herbivorous Marsupials in the Museum at Sydney : —

" There is a very fine series of fossil remains in the Australian- Museum collection, and very many of the specimens yet undetermined.