654 REVIEWS 
The general section of the Paleozoic sediments is_as follows: 
Poteau beds 3500 
Wiper Goal! Ni Productive beds 1800 
Coal Measures 
P ane Lower Coal M. Barren beds 18480 
ennsylvanian 
“Millstone grit” Sa hicee toh ea ee 500 
Chester, St. Louis, Warsaw Boston group 780 
Lower Carboniferous, 
eer? Batesville sandstone 200 
Mississippian Cea . Fayetteville shale 300 
USLo(o so) eee Wyman sandstone Io 
Boone chert 370 
: Sylamore sandstone 40 
Devonian s Eureka shale 50 
Upper Silurian St. Clair marble 155 
ames Sinton Izard limestone 285 
4 Underlying beds 1750 
28220 
The ‘Marine Fossils from the Coal Measures of Arkansas,” by 
Dr. Smith, is largely a description of species, with comments upon 
their biologic relationships. Nevertheless, in the introductory portion, 
the stratigraphy is considered, and the conclusions reached concern- 
ing the position of the beds in the general geological column, as 
thought to be indicated by the fossil evidence, are set forth. 
A table is given correlating the Arkansas strata with the Carbonit- 
erous deposits of China, India, Russia, South America, and other parts 
of the world. Done in such a broad way, it is hard to see just what 
force any extended discussion of this kind can have. Such faunal 
comparisons are, in general, of great interest in a biological way, and 
evidence a wide acquaintance with palzontological literature, but, 
from a geological standpoint, they have, with no reflection on Dr. 
Smith’s efforts, small stratigraphic value. A detailed parallelism with 
its nearest related areas of Coal Measures, which is the great desidera- 
tum to all those at all interested in the geology of the region, and 
