﻿Reviews — Deksse Sf cle Lapparent — Revue de Geologie. 473 



"with a view of giving assistance to paleeontological students and 

 workers, in avoiding errors and improving the nomenclature of the 

 science. Most of us must admit that much confusion exists in the 

 scientific nomenclature, as regards scientific and grammatical errors. 

 Synonymy is frequently overburthened by the impossibility of learn- 

 ing where species have been found, or what names have been given ; 

 besides which, many names have been formed in violation of the 

 recognized rules of language. On this latter point some errors are 

 pointed out, and useful rules are given for the formation of new 

 names in palaBontology, and thus avoid the occurrence of malformed 

 words and barbarous terms, some of which, too long current to be 

 now withdrawn from circulation, will serve as memorials, fossil 

 relics, to show to future times the freaks of linguistic development 

 in the early days of Palaeontology. 



The introduction which follows is devoted to stratigraphical 

 geology, and the author gives a concise a,ccount of the successive 

 geological formations and their equivalents in North America, from 

 the Arch^an to the Permian inclusive, with an estimated thickness 

 of 28 miles, all of which is known to be fossiliferous, except about 

 three miles at the base. In the Catalogue, which occupies more than 

 200 pages of the work, the genera and species are arranged in 

 alphabetical order under the following great divisions, Plantse, 

 Protista, Eadiata, Mollusca, Articulata, and Vertebrata ; the sub- 

 kingdoms are again divided into classes, orders, and families ; so that 

 the zoological position of the genera mentioned in the different lists 

 may be found. The mode of arrangement is simple but useful, the 

 names of the authors, dates, place of publication, groups of rocks in' 

 which the species are found, are given, as well as the etymology and 

 signification of the words, as in the following : 



Calymene, Brong. 1822, Hist. Nat. Crust. Foss. [Ety. KeJealymenos concealed] 

 Blumenbachii, Brong. 1822, Hist. Nat. Crust. Foss. Niagara group [Ety. proper 

 name]. 



By this publication Mr. Miller has conferred a benefit on 

 geologists, in showing the nature and extent of the North American 

 fauna, and thus enabling them more readily to compare it with that 

 of Europe. • J. M. 



II. — Eevue de Geologie, poim les Annees 1874 et 1875. Par 

 MM. Delessh et de Lappaeent. (Paris, 1877.) 



THE publication of the thirteenth volume of the French Geo- 

 logical Eecord contains the progress of Geology and the allied 

 sciences for the years 1874-75, as shown by numerous papers and 

 books published during that period, and of the contents of which 

 fair and useful abstracts are given. Independently, however, of 

 published works, the editors of the " Eevue " have further rendered 

 their work more valuable by notices of the maps and unpublished 

 documents shown in the International Exhibition of Geography at 

 Paris, and by the insertion of numerous private communications 

 from French and other geologists. Besides these, many analyses of 

 rocks are given, which have been made either in private laboratories 



