REVIEWS 647 
synclinal mountains bounded by bluffs ; (2) uniform anticlinal valleys 
with sharp, well defined limits ; (3) monoclinal mountains with steep 
northwest sides and gentle southeast slopes; (4) monoclinal valleys 
with ill-defined and irregular northwest limits; (5) flatwoods; (6) 
irregular valleys with jagged edges; and (7) chert hills and ridges. 
Each of these subdivisions is described and illustrated by local 
examples. The geology is introduced by brief reference to the 
changes due to denudation, after which the faults of the region, to the 
number of sixteen, are named and described. A general description of 
the geological formations of the region, ranging from the crystalline 
Talladega slates to the Lafayette, follows. The minerals, rocks, and 
other substances of special use and interest, are next discussed, and 
this is followed in turn by a chapter devoted to the soils, agricultural 
features, timber, water power, climate, health, and drainage of the 
region. ‘The remainder of the report is occupied with county details, 
embracing Etowah, St. Clair, Jefferson, Tuscaloosa, Bibb, Shelby, 
Talladega, Calhoun, Cherokee, Clayborn, Coosa, and Chilton counties. 
The report is accompanied by maps and illustrated by excellent half 
tones. 
The economic factor has a very prominent place throughout the 
report, and will doubtless render it very helpful in developing the 
important resources of the region. Cc: 
First Report of the Geological Commission of the Colony of the Cape 
of Good Hope. Capetown, 1896. 
The Geological Survey of the Colony of the Cape of Good Hope 
was recently organized by the appointment of Professor Corstorphine 
as geologist, and Arthur W. Rogers and Ernst H. L. Schwarz as 
assistant geologists. Considering the limitations of time, of means, 
and of personnel, this first report indicates an active prosecution of 
the work entrusted to the commission. The report in hand contains 
brief contributions on the following subjects: ‘‘Report on the 
Laingsburg Coal,”’ by Professor Corstorphine ; ‘“‘Summary of the Work 
done in the Southwestern Districts,” by Rogers; ‘Survey of the Beau- 
fort West District,” by Schwarz ; ‘‘Summary of the Work done in the 
Tulbagh Area and Worcester District,” by Schwarz; ‘‘ Report of the 
Subcommittee on Deep Artesian Well Borings,”’ by Stewart, Corstor- 
phine, and Saunders ; ‘“‘ Report of a Preliminary Geological Survey of 
