Reviews — Delesse fy de Lapparent — Revue de Geologie. 473 
witk a view of giving assistance to palieontological students and 
workers, in avoiding errors and improving tlie nomenclature of tlie 
sdence. Most of us must adinit tkat mucli confusion exists in the 
scientific nomenclature, as regards scientific and grammatical errors. 
Synonymy is frequently overburtkened by tke impossibility of learn- 
ing wkere species kave been found, or wkat names kave been given ; 
besides wkick, many names kave been formed in violation of tke 
recognized rules of language. On this latter point some errors are 
pointed out, and useful rules are given for tke formation of new 
names in palseontology, and tkus avoid tke occurrence of malformed 
words and barbarous terms, some of wkick, too long current to be 
now witkdrawn from circulation, will serve as memorials, fossil 
relics, to show to future times tke freaks of linguistic development 
in tke early days of Palaeontology. 
Tke introduction wkick follows is devoted to stratigrapkical 
geology, and tke autkor gives a concise account of tke successive 
geological formations and tkeir equivalents in North America, from 
tke Archasan to tke Permian inclusive, witk an estimated tkickness 
of 28 miles, all of wkick is known to be fossiliferous, except about 
tkree miles at tke base. Tn the Catalogue, wkick occupies more tkan 
200 pages of tke work, tke genera and species are arranged in 
alpkabetical order under tke following great divisions, Plantae, 
Protista, Eadiata, Mollusca, Articulata, and Yertebrata; tke sub- 
kingdoms are again divided into classes, Orders, and families; so that 
tke zoological position of tke genera mentioned in tke dilferent lists 
may be found. Tke mode of arrangement is simple but useful, the 
names of tke authors, dates, place of publication, groups of rocks in 
wkich tke species are found, are given, as well as tke etymology and 
signification of tke words, as in tke following : 
Calymene, Brong. 1822, Hist. Nat. Crust. Foss. [Ety. Kelcalymenos concealcd] 
Blumenbachii, Brong. 1822, Hist. Hat. Crust. Foss. Niagara group [Ety. proper 
narae]. 
By tkis publication Mr. Miller has conferred a benefit on 
geologists, in skowing the nature and extent of the Nortk American 
fauna, and tkus enabling tkem more readily to compare it witk tkat 
of Europe. J. M. 
II. — Revue de Geologie, pour les Annees 1874 et 1875. Par 
MM. Delesse et de Lapparent. (Paris, 1877.) 
rnHE publication of tke tkirteentk volume of tke French Geo- 
I logical Record contains tke progress of Geology and tke allied 
Sciences for tke years 1874-75, as skown by numerous papers and 
books publisked during tkat period, and of tke contents of wkich 
fair and useful abstracts are given. Independently, however, of 
publisked works, tke editors of tke “ Revue ” kave further rendered 
tkeir work more valuable by notices of tke maps and unpublished 
documents skown in the International Exhibition of Geograpky at 
Paris, and by tke insertion of numerous private Communications 
from Frenck and otker geologists. Besides tliese, many analyses of 
rocks are given, wkick kave been made eitker in private laboratories 
