Monthly Author's Catalogue. 59 
mineralogical system of classification and has given the equations 
for the respective class order, rang and grad, thereby making the 
nomenclature clearly intelligible to those who are not as yet com- 
pletely familiar with the new scheme. 
His treatment of the Cerrillos district is clear and logical, writ- 
ten in a very interesting manner and complete in all respects. In 
addition to the palaeontological plates the book is illustrated by a 
large map of the region, accompanied by sections, by numerous 
full page photographs, by various half page diagrams and plates, 
and by a series of photo-micrographs. E. F. B. 
MONTHLY AUTHOR'S CATALOGUE 
OF AMERICAN GEOLOGICAL LITERATURE 
ARRANGED ALPHABETICALLY. 
BLAKE, W. P. 
Evidences of plication in the rocks of Cananea, Sonora, Mexico. 
(Trans. Am. Inst. Min. Eng., Sept., 1904.) 
BRIGHAM, A. P. 
Geography and History in the United States. (Jour. Geog., 
vol. 3, pp. 3.59-366, Oct., 1904.) 
CLARK, W. B. 
Matawan formation of Maryland, Delaware and New Jersey, 
and its relations to overlying and underlying formations. (Am. 
Jour. Sci., vol. 18, pp. 435-441, Dec, 1904.) 
EASTMAN, C. R. 
Style in scientific composition. (Science, vol. 20, Dec. 9, 1904.) 
EASTMAN, C. R. 
Notes on the historv of scientific nomenclature. (Science, vol. 
20, Nov. 25, 1904.) 
EMMONS, S. F. 
The term "geology." (Science, vol. 20, p. 886, Dec. 23, 1904.) 
GARRISON, F. LYNWOOD. 
Tin in the United States. (Eng. Min. Jour., vol. 78, p. 830, Nov. 
24, 1904.) 
GIDLEY, J. W. (W. D. MATTHEW and). 
New or little known mammals from the Miocene of South Da- 
kota. (Am. Mus. Nat. Hist.. Bull., vol. 20, pp. 241-268, July 20, 
1904.) 
GILBERT, G. K. 
Systematic asymmetry of crest lines in the high Sierra of Call- 
