62 The American Geologist. January, 18119 
crepancy, if it be one, is the fact that the rocks described by each in- 
dividual are those with which he is very familiar and which conse- 
quently he would seem best fitted to describe. The collection and dis- 
tribution of these rock specimens and the writing of the necessary de- 
scriptions must have been a long and arduous task, and both Mr. Diller 
and the Survey are to be congratulated on its successful completion. 
u. s. G. 
MONTHLY AUTHORS' CATALOGUE 
OF American Geological Literature, 
Arranged Alphabetically* 
Abbe, Cleveland, Jr. 
An episode during the terrace cutting of the Potomac. (Johns 
Hopkins Univ. Circulars, vol. 18, pp. 16-17. Nov. 1898.) 
Ashley, G. H. 
Note on an area of compressed structure in western Indiana. (Bull. 
Geo!. Soc. Am., vol. 9, pp. 429 431, Dec. i, 1898.) 
Bagg, R. M., Jr. 
Tlie occurrence of Cretaceous fossils in the Eocene of Maryland. 
(Am. Geol., vol. 22. pp. 370-375, Dec. 1898.) 
Beede, J. W. 
Notes on Campophyllum torquium Owen, and a new variety of 
Moiiopteria gibbosa Meek and Worthen. (Kansas Univ. Quart., ser. 
.v., vol. 7, pp. 187-190, Oct. 1898.) 
Beede, J. W. 
Preliminary notice on the correlation of the Meek and ]\Iarcou sec- 
tion at Nebraska City, Nebraska, with the Kansas Coal Measures. 
(Kansas Univ. Quarterly, ser. A, vol. 7, pp. 2},\-22,2), Oct. 1898.) 
Blake, W. P. 
[Report of the territorial geologist of Arizona.] (Report of the 
governor of Arizona to the Secretary of the Interior for the fiscal 
year ending June 30, 1898, pp. 19-86, 1898.) 
Case, E. C. 
The development and geological relations of the vertebrates. III., 
Reptilia, continued. (Jour. Geol., vol. 6, pp. 711-735, Oct.-Nov. 1898.) 
[Cope, E. D.] 
^Memoir of Edward D. Cope. By W. B. Scott. (Bull. Geol. Soc. 
Am., vol. 9, pp. 401-408, Dec. i, 1898.) 
Crane, W. R. 
Geography and detailed stratigraphy of the Kansas Coal Measures; 
♦This list includes titles of articles received up to the 20th of the preceding 
month, including general geology, physiography, paleontology, petrology and 
mineralogy. 
