678 REVIEWS 
“‘Faunal Succession and the Correlation of the Pre-Devonian of Southern 
Illinois,” by T. E. Savage, pp. 302-41, and a joint paper by Udden and 
Todd “Structural Materials in Illinois,” pp. 342-90. 
Mineral Resources of the United States, 1909. Washington: U.S. 
Geological Survey, 1911. Part I, “Metals,” pp. 617, plate 1; 
Part II, ““Nonmetals,” pp. 942. 
The usual statistical tables are extended to include 1909. A gen- 
eral increase in production over that of 1908 is shown, but only a few 
products have recovered to the high values of 1907. Among these is 
aluminum, which showed in 1909 an increase of 206 per cent over 1908. 
Compared witht the figures for production in 1908 only thirteen 
out of the seventy-four items listed show a decline. Of these platinum 
shows an increase in total value in spite of a 15 per cent decrease in 
production. Iron and copper show notable increase, both surpassing in 
quantity the output for 1907. 
Among other changes the following points are of interest: 
California shows an increase of 20 per cent in its petroleum output, 
partly due to the development of the Coalinga field. Colorado shows a 
general decline in its major products but a slight increase in total value. 
Renewed activity in the Joplin district increased Missouri’s zinc 
output by 4,000,000 lbs., bringing it almost up to the production in 1907. 
The opening of great porphyry deposits in the Ely district brought 
Nevada into fifth rank among copper producers with an increase of 
350 per cent over the previous year. 
The shut-down of the Homestake mines decreased the gold output 
of South Dakota by more than $1,000,000. ; 
As in 1908 California led in oil production with Oklahoma second. 
{llinois continued in third place in spite of a slight drop in output. 
Conservationists will note with some satisfaction the continued 
increase in the use of retort ovens in the coke industry. 
A. D. B. 
High School Geography, Physical, Economic and Regional; Pts. I 
and II, Physical and Economic. By CHARLES R. DRYER. 
American Book Co., 1911. Pp. 340. 
The author of this new high-school text is already well known for 
his elementary textbook of physiography published eleven years ago 
and for many valuable papers upon Indiana geography. ‘The present 
work is an attempt to combine an outline of commercial geography 
