680 REVIEWS 
type of deposit, and metals produced are noted and a short bibliography 
of U.S. and state geological survey publications relating to the region 
is added. 
A brief summary of the geology of the various states, by Lindgren, 
forms an introduction to the catalogue proper. 
AG arabs 
The Data of Geochemisiry. By F. W. CiarKke. Bull. No. 4o1, 
U.S. Geological Survey. Washington, tg11. Pp. 782. 
A new edition of Bulletin No. 330, of the same title. A few revisions 
of minor importance are made to include new developments since the 
first edition. 
AD: B. 
A CORRECTION 
BERKELEY, CAL. 
May 14, 1912 
Editors ‘‘ Journal of Geology”’: 
Dear Sirs: The January-February number of the Journal of Geology 
contains a paper by E. T. Dumble regarding some ee and older 
deposits near Coalinga, Cal. 
While in general he has given credit to the men whose work he has 
gleaned for his material, it is regrettable that some parts of the paper 
need correction. I have called his attention to this matter, but as 
nothing has been done I feel obliged to write to you myself. 
On p. 32 there is a list of twenty-seven or more species the identifica- 
tion of which he has credited to me. I am compelled to state that his © 
use of this list was premature and unauthorized, and it was not even 
contained in any of my private and confidential reports to him or to the 
Southern Pacific Company. I did indeed collect the fossils referred to, 
and had made a pencil list for purposes of study only, that was not 
designed for publication, as it needed confirmation or amendment. As 
it now stands it is incorrect in several of the identifications. 
If Mr. Dumble had confided to me his desire to use this list, I would 
have furnished him one that was authentic and that would have been 
creditable to him and to myself, but as he did not, and as the matter 
stands, I do not wish to be sponsor for its accuracy. 
F. M. ANDERSON 
2604 Etna St. 
BERKELEY, CAL. 
