Review of Recent Geological Literature. 267 
ruthers, Woods, Feistmantel, Nicholson and Etheridge(fil.?), McCoy, 
Sowerby, Dana and others. To these have been added, however, numer- 
ous new species. The original descriptions are quoted, and each chap- 
ter is preceded by a general account of the geology, economical products 
and the distribution of the rocks in which the fossils are found. Thus 
the work constitutes a manual of the geology of Queensland. The fos- 
sils named are distributed amongst the Devonian, Permo-Carboniferous, 
Trias-Jura, Lower Cretaceous, Upper Cretaceous, and Post-Tertiary. 
The work concludes with a chapter on the petrographical characters of 
some of the crystalline rocks, by A. W. Clarke, accompanied by eight 
colored plates of microscopical characters. 
"Geological Survey of Georgia. The paleozoic grottp. The Geol- 
ogy of ten counties in northwestern Georgia. Resources.' 1 '' J. W. 
Spencer, State Geologist. Octavo, pp. 406; plates and geological map. 
Atlanta, 1893. 
This is almost the sole official result* of another spasmodic effort on 
the part of the State of Georgia to execute a geological survey of her 
domain. While one of the earliest of the States of the union to engage in 
an official investigation of her geology (by John Ruggles Cotting, in 1836), 
Georgia has been unfortunate or misguided in her efforts, and her re- 
sults, which ought to have been as voluminous and important as those of 
any State, have been quite meagre and unimportant. 
Dr. Spencer was appointed state geologist in January, 1889. Four 
and a half years have been spent. Dr. Spencer has had one or more 
"assistants." This report, however, is entirely from the pen of Dr. 
Spencer, and while it shows numerous signs of haste both in composi- 
tion and in proof-reading, and presents therefore, in some respects, a 
rather slip-shod aspect, it is an important and valuable report. Indeed, it 
is by far the most important contribution ever made to the geology of that 
state. What it may lack in completeness is not due to inefficiency on 
the part of its author, but rather to the highly unfavorable and un- 
friendly conditions by which he has been surrounded. The report it- 
self exhibits a masterly grasp of the geological problems of north- 
western Georgia, and is specially full and praiseworthy in the chapters 
relating to the economic resources. 
After a brief synoptical statement of geologic agencies, processes, 
and phenomena, as illustrated more particularly in northwestern 
Georgia, the geological groups of the region are treated serially. The 
report does not embrace the Mesozoic or Tertiary rocks of the state, 
but treats of the Cambrian, Silurian, Devonian and Carboniferous 
systems, and of these strata it gives a very full and lucid exposition. 
Then follows the local geology of ten counties. 
The economic features are not only represented on the accompanying 
map, but are discussed seriatim, viz: Iron ores and their modes of oc- 
currence; Local distribution of brown ores; The composition of the brown 
ores; Red iron, or "fossil" ore; Local distribution of fossil ore; Composi- 
*A short "First ftoport of Progress" was issued in 1891. 
