320 
The American Geoloyist. 
NoveHibor, 1897 
true to say that, for the distinctively European terranes, es- 
pecially for all those later than the Paleozoic, the classifica- 
tion which he has adopted, and the nomenclature published, 
will be found acceptable to the great majority of geologists, 
the world over. This cannot be said of the Paleozoic, and 
especially of the Lower Paleozoic. His list of advisers em- 
braces no American, and among the English he names Lap- 
worth only. While, therefore, the face of his "Resume du 
chronographie chronologique" to an American has a decid- 
edly European aspect, to the English geologist it must pre- 
sent an aspect decidedly continental. Perhaps the most re- 
markable feature in the tabulation is a rather promiscuous 
sprinkling of American terms near the bottom of the table, 
for they are inserted without due reference either to their sig- 
nificance and scope, or to their proper correlation. The most 
of the late American researches on the lowest stratified rocks 
are not ex])ressed, and, strange to say, having chosen Lap- 
worth as collaborator of the Silurian, he sets aside Lap- 
worth's judgment on an important question of stratigraphy 
and nomenclature relating to North American Paleozoic, and 
introduces, in the foremost rank, as characteristic and au- 
thentic, some American terms that are but rarely seen in re- 
cent American literature devoted to this horizon. Following 
is the author's arrangement of the bottom of the Paleozoic 
and the older rocks : 
Periode ou Systfeme. 
Epoque ou Serie. 
Age ou Etage. 
Synonymes g6n6raux 
les plus usit§s. 
Silurique. 
{ i Ludlovien 
Silurian ] Wenlockeio 
( Landoverien 
iCaradocien 
Landeilien 
Arenigien 
iPotsdamien 
Menevien 
G^orgien 
Huronien. 
(Ke 
(Pel 
weenien 
Pebidien 
Arch^ique . 
] ( Arvonien 
I Laurentien •] Dim^tien 
] Gothlandien ou 
t Silurien 
) superieur. 
\ Silurien infer, ou 
i Cambi-ien 
) superieur. 
STremadocien. 
Acadian. 
Taconien (Lapw.) 
Precambrien 
ou Algonkien. 
\ Arch6en. 
( Azoique. 
I Protozoique 
' ou Eozoique. 
