212 The American Geologist. March, 1892 
between lake Superior and the Rocky mountains, by Warren Upham; 
No.73: The Viscosity of Solids, by Carl Barus; No. 74: The Minerals of 
North Carolina, by F. A. Genth; No. 75: Record of North American 
Geology for 1887 to 1889, inclusive, by N. H. Darton; No. 76: A Dic- 
tionary of Altitudes in the United States, by Henry Gannett; No. 77: 
The Texan Permian and its Mesozoic Types of Fossils, by C. A. White; 
No. 78: Report of the Work done in the Division of Chemistry and 
Physics, mainly during the fiscal year 1889-90, by F. W. Clarke; No. 79: 
A late Volcanic Eruption in Northern California and its peculiar Lava, 
by J.S. Diller; No. 80: Correlation papers—Devonian and Carboniferous, 
by H. S. Williams; No. 81: Correlation papers—Cambrian, by C. D. Wal- 
cott; No. 82: Correlation papers—Cretaceous, by C. A. White. 
Explorations in Newfoundland and Labrador in 1887, made in connec- 
tion with the cruise of the U.S. Fish Commission schooner Grampus, by 
F. A. Lucas. From Report of U.S. National Museum, 1888-89. Wash- 
ington, 1891. 
Preliminary Handbook of the Department of Geology of the U. S$. Na- 
tional Museum, by G. P. Merrill. From Report of U.S. Nat. Mus., 1888- 
89. Washington, 1891. 
Preliminary Report on the Coal Deposits of Missouri, by ArthurWins- 
low. Published by the Geological Survey of Missouri. Jefferson City, 1891. 
Report on the Geology and Mineral Resources of the central mineral 
region of Texas, by Theo. B. Comstock. From Second Ann. Rep of Ge- 
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Annual Report of the Geological Survey of Arkansas for 1890, Vol. II, 
The Igneous Rocks of Arkansas, by J. Francis Williams. 
Preliminary Report on the Utilization of Lignite, by E. T. Dumble, 
State Geologist of Texas 
Geological Survey of Kentucky. Report on the Geology of parts of 
Jackson and Rockcastle counties, by Geo. M. Sullivan. 
Geological Survey of Alabama. Report on the Coal Measures of the 
Plateau Region of Alabama, by Henry McCalley, including a Report on 
the Coal Measures of Blount county, by A. M Gibson. 
Geological Survey of Canada. Contributions to Canadian Micro-Pal- 
wontology. Part III, by T. Rupert Jones. 
United States Geological Survey. Tenth Annual Report. Part 1, 
Geology. Part 2, Irrigation. 
Report on an Additional Water Supply for the city of Rockford, Il., by 
J.T. Fanning, D. C. Dunlap and D. W. Mead. 
CORRESPONDENCE. 
ARE THE Eozoonat LIMESTONES AT St. Joun, NEw Brunswick, PRE- 
CAMBRIAN‘—In an editorial reference to Eozoon and the pre-Cambrian 
fossils of St. John, you appear to imply a doubt as to the pre-Cambrian 
age of the latter; or at least that this may be an alternative with some 
who may admit the organic origin of the former; adding that other 
eee 
