472 
Perieics — -Miller’ & Paheozoic Fossils : America. 
W. Gunn, F.G.S. — A Short Sketch of the finding of Silurian Eocks 
in Teesdale. 
W. Molyneux, F.G.S. — On the Occurrence of Avicul opecten and otker 
Marine Shells in Deposits associated with Seams of Coal, con- 
taining Salt Water, in the Ashby Coal-field. 
H. C. Sorby, F.G.S . — On a New Method for Studying the Optical 
Characters of Minerals. 
Bev. Professor Heer. — Note on the Fossil Flora of the Arctic Eegions. 
H. Woodward, F.B.S. — On the Discovery of Branclüpus in a fossil 
state in the Eocene Limestone (Freshwater) of Gurnet Bay, Isle 
of Wight. 
G. A. Lebour. F.G.S. — On the Age of the Cheviots. 
B. A. C. Godwin- Austen, F.B.S . — On the Geological Significanee of 
the Boring at Messrs. Meux’s Brewery, London. (See p. 474.) 
Thomas Plunhett. — Cave Exploration in Fermanagh. 
Dr. J. S. Phene. — On some peculiar Stalactitic Forniations from the 
Island of Antiparos. 
A. J. Mott. — On the Source and Function of Carbon in the Crust of 
the Earth. 
ZEÄZE’V’IZEWS. 
I. — The American Paheozoic Fossils. A Catalogue of the 
Genera and Species ; with an Introduction devoted to 
THE StRATIGRAPHICAL GeOLOGY of THE PaL^OZOIC EoCKS. 
By S. A. Miller. (Cincinnati, Ohio, 1877.) 
rnHE constant additions to tlie number of fossil species, and their 
[ publication in ditferent memoirs and various kinds of periodicals, 
renders it very difficult for the student of pakeontology to ascertain 
where to find theni described or noticed. 
Under this point of view, carefully prepared catalogues are of 
considerable use and convenience, whether as merely including the 
species of a genus, or that of a larger group, as the Catalogue of the 
Crustacea by Mr. H. Woodward noticed in this Magazine (Sept. 
p. 413), or as einbodying the entire fauna of a single geological 
formation, or of a series of strata, as in the Catalogue which is 
the object of this brief notice. 
The student of Paheozoic fossils will find in this volume a record 
of the numerous remains of the North American Palieozoic fauna 
and flora, which have of late years been the subject of numerous 
valuable memoirs by the indefatigable palaeontologists of that conntry. 
The main hody of the work, which of course comprises the 
catalogue of species, is preceded by the preface, in which the author 
states the general plan upon which the Catalogue is based. Some 
notion of the extent of the work and consequent labour attending 
it may be gleaned from the fact that the total number of genera and 
species, including the synonyms, is 11,200, comprising 1000 genera 
and 2000 species; the number 2200 are names of genera and species 
which are considered to be synonyms of the others. 
A chapter is devoted to the construction of systematic names in 
palieontology by Prof. Claypole, containing some useful remarks, 
