1 86 The American Geologist. yi^vch. 1903. 
lake Beulah, Elkhart lake, Oconomowoc and other lakes of Waukesha 
county, the Chain-o'-Lakes in Waupaca county, Delavan and Liiuder- 
dale lakes. Green lake, Big Cedar lake, and lakes Mendota and Mon- 
ona, adjoining Madison. Much attention is given to the effects of 
gla^ciation in producing the multitudes of small lakes in this region, 
and to the. action of the lakes in modification of their shores. 
Lake Winnebago, larger than any of these, but comparatively shal- 
low, is expected to be the theme of another bulletin ; and an atlas of 
the chief lakes of the state is in preparation. 
Lake Mendota, having an area of 15 square miles, is the largest 
here described ; and Green lake, measuring 237 feet in depth, is the 
deepest. The maps show admirably the contour of the lake beds, 
which, not less than their shores and the surrounding country, give 
evidences of the glacial history to which mainly they owe their origin. 
w. u. 
The Origin of Certain Place Names in the United States. By Henry 
Gannett. Bulletin of the U. S. Geol. Survey, No. 197. Pages 
280; Washington, 1902. 
Historians and antiquaries will welcome this very satisfactory com- 
pilation of the origin and meaning of about seven thousand geographic 
names, representing, though far from completely, all parts of our 
country. This work may desirably be much further extended, for 
which the author invites "criticisms and additions, with a view to ob- 
taining in the future all possible information on this subject." It is 
a field of especial attractiveness for students of geography, liistory, 
and philology. Very advantageously may our state historical societies 
gather all details in their respective states, as is now being done in 
Minnesota, for their own publications and for contribution to the great 
work planned, and thus begun, by our national survey . w. u. 
Bornholms Parado.videslag og deres Fauna, af Karl A. Gronwell 
[Danmark's geologiski Undersogelse, 11 Rsekke Nr. 13, Kjobenhavn, 
1902.] 
This admirable and comprehensive essay gives an excellent review 
of the epitomized sections of the Cambrian terrane of the island of 
Bornholm in the Baltic sea. 
Previous to the issue of this publication, work had been done on 
the Cambrian of this island by Prof. F. Johnstrup and others, and 
the fauna obtained compared with those of localities in Sweden and 
Norway, but this work goes much more thoroughly into the treat- 
ment of the fauna in all its aspects than has hitherto been attempted. 
The collections are chiefly from two localities — Loesaa and Bor- 
regaard at Aa. When it is understood that the whole thickness of 
the Paradoxides at one of these localities is but little over 2 metres, 
and at the other not much over 3, it will be seen of how little bulk 
the Middle Cambrian is in southern Scandinavia. 
Mr. Gronwell was unable to find the full development of the 
Paradoxides beds, as seen at Andrarum in Sweden, on this island. 
