330 The American Geologist. November, 1903. 
TIGHT, W. G. 
Drainage modifications in southeastern Ohio and adjacent parts 
of West Virginia and Kentucy. U. S. G. S., Profess. Pap., no. 13, pp. 
Ill, pis. 3 7, 1903. 
TODD, J. E. 
Concretions and their geological effects. (Bull. G. S. A., vol. 14, 
pp. 353-36S, pis. 49-53, Sept., 1903.) 
UDD£N, J. A 
On the occurrence of Rhizopods in the Pella beds in Iowa. (Iowa 
Acad. Sci., vol. 9, p. 120, 1902.) 
UDDEN, J. A. 
Geology of Mills and Fremont counties. (Iowa Geol. Sur., vol. 13, 
pp. 126-1S3, Maps, 1903.) 
UDDEN, J. A. 
Pleuroptyx in the Iowa Coal Measures. (Iowa Acad. Sci., vol. 9, 
p. 121, 1902.) 
WARMAN, P. C. 
Catalogue and Index of the publications of the United States Geo- 
logical Survey, 1901 to 1903, U. S. Geol. Sur., Bull. No. 215, pp. 234, 
Washington, 1903. 
WHITEAVES, .1. F. 
Notes on some Canadian specimens of "Lituites undatus." (Ott. 
Nat., vol., 17, pp. 117-122, 1903.) 
WHITEAVES, J. F. 
Description of a species of Cardioceras from the Crow's Nest coal 
fields. (Ott. Nat., vol. 17, pp. 65-67, July, 1903.) 
WILLMOTT, A. B. (A. P. COLEMAN and). 
The Michipicoten Iron Ranges. (Univ. Tor. Studies, no. 2, Geol. 
ser., 1902, pp. 47, maps.) 
WINCHELL, HORACE V. 
Synthesis of chalcocite and its genesis at Butte, Montana. (Bull. 
G. S. A., vol. 14, pp. 269-276, July, 1903.) 
WOODWORTH, J. B. 
Note on the elevated beaches of Cape Ann, Massachusetts. (Bull. 
Mus. Comp. Zool., vol. 42, Geol. Series, vol. 6, No. 4, pp. 191-193.) 
YOUNG, L. E. (S. W. BEYER and). 
Geology of Monroe county. (Iowa Geol. Sur., vol. 13, pp. 356-423, 
map, 1903.) 
CORRESPONDENCE. 
Glacial Lake Jean Nicolet. Through an oversight which I much 
regret, in an article contributed by me to the last August number of the 
American Geologist, the name Lake Nicolet, applied to the glacial lake 
of the upper part of the basin of the Fox river, in Wisconsin, dupli- 
cates, except for a slight difference of orthography, the name Lake 
