﻿472 Reneics — Miller's Pakeozoic Fossils : America. 



W. Gnnn, F.G.S.—A Short Sketch of the finding of Silurian Eocks 



in Teesdale. 

 W. Molyneux, F.G.S. — On the Occurrence of Avicidopecten and other 



Marine Shells in Deposits associated with Seams of Coal, con- 

 taining Salt Water, in the Ashby Coal-field. 

 H. C. Sorby, F.G.S.—Ou a New Method for Studying the Optical 



Characters of Minerals. 

 Bev. Professor Beer. — Note on the Fossil Flora of the Arctic Eegions. 

 H. Woodivard, F.R.S. — On the Discovery of Branchipus in a fossil 



state in the Eocene Limestone (Freshwater) of Gurnet Bay, Isle 



of Wight. 

 G. A. Lehour. F.G.S.— On the Age of the Cheviots. 

 B. A. C. Godwin-Austen, F.B.S. — On the Geological Significance of 



the Boring at Messrs. Meux's Brewery, London. (See p. 474.) 

 Thomas Fhmkett. — Cave Exploration in Fermanagh. 

 Dr. J. S. Phene. — On some peculiar Stalactitic Formations from the 



Island of Antiparos. 

 A. J. Mott. — On the Source and Function of Carbon in the Crust of 



the Earth. 



I. — The American Paleozoic Fossils. A Catalogue of the 

 Genera and Species ; with an Introduction devoted to 

 THE Stratigraphical Geologt of the Paleozoic Books. 

 By S. A. Miller. (Cincinnati, Ohio, 1877.) 



THE constant additions to the number of fossil species, and their 

 publication in dilferent memoirs and various kinds of periodicals, 

 renders it very difficult for the student of palseontology to ascertain 

 where to find them 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 embodying 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 Palseozoic fossils will find in this volume a record 

 of the numerous remains of the North American Palaeozoic fauna 

 and flora, which have of late years been the subject of numerous 

 valuable memoirs by the indefatigable palceontologists of that country. 



The main body 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 sjoecies 

 which are considered to be synonyms of the others. 



A chapter is devoted to the construction of systematic names in 

 paleeontology by Prof. Claypole, containing some useful remarks, 



