evil PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 
subsequent researches and discoveries. This year the members of 
the Geological Society of France have had presented to them the first 
part of a History of the Progress of Geology, from 1834 to 1845, by. 
the Vicomte d’ Archiac, a closely printed octavo volume of 679 pages, 
published under the auspices of the French Minister of Public Instruc- 
tion, M. de Salvandy. This part contains Cosmogonie and Géogénie, 
the Physique du Globe, Géographie physique and Terrain moderne. 
GEOLOGICAL NOTICES. 
As it would far exceed the limits of an address of this kind to at- 
tempt an account, in any useful detail, of the various publications 
either directly dedicated or having reference to our science, and 
which have appeared during the past year, the following notices have 
been selected, not because others of great importance to the progress 
of geology may not readily be found, but because they have reference 
to points of considerable interest. 
Palzeontologists have continued to add abundantly to our know- 
ledge of the ancient forms of life, extending from the gigantic 
mammals of previous geological times down to the minute infusoria 
which have been found forming, by their immense numbers, a large 
proportion of certain rocks. While at our own meetings Professor 
Owen has made known to us the fossil animals previously mentioned, 
we find other comparative anatomists and paleontologists adding 
to our stores of this branch of our knowledge. Thus M. von Meyer 
describes a new fossil genus of the Carnassiers, found in the tertiary 
beds of Mombach. To this genus he assigns the name of Stephano- 
don, and to the species S. Mombachensis. We find him establishing 
a new genus by the examination of the reptile found im the Grés 
bigarré of Bohemia, and named Palcosaurus Sternbergi (Fitzinger). 
He adds also many new species to our fossil fauna, such as two new 
species of Labyrinthodon, in the Vosges sandstone of the Swartz- 
wald, the Homosaurus Mazimiliani from Solenhofen, the Rham- 
phorhynchus longicaudis from the calcareous slates of Eichstadt, and 
the Emys Turnauensis from the tertiary rocks of Styria, with many 
other paleontological communications of interest, such as his notice 
of the abundance of Batrachian remains (Triton opalinus, Rana Lus- 
chitzana, and Aspherion Reusst, the last a new genus) in the tertiary 
rocks of Bohemia, as also his notice of a fossil marmot (drctomys 
marmotta) in the drift of Mosbach, near Wiesbaden. Von Meyer 
considers that the Arctomys primigenia of Kaup is the modern 
marmot, and the Spermophilus superciliosus of the same author the 
Spermophilus citillus. 
We are indebted to Dr. Jeffries Wyman, Professor of Comparative 
Anatomy in Harvard College, Massachusetts, for a description of the 
cranium of Casteroides Ohiensis. The geological position of this 
fossil has been shown by Mr. James Hall to be similar to that as- 
signed by Mr. Lyell, in his ‘ Travels,’ to the Mastodon giganteus, the 
bones of which, as well as of the Elephant, accompany the Caste- 
roides. They all in fact occur in superficial deposits, often of shell 
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