VI ADVERTISEMENT. 
84. Correlation Papers— Neocene, by W. H. Dall and G. D. Harris. 1892. 8°. 349 pp. 3 pi. Price 
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85. Correlation Papers— The Newark System, by Israel Cook Russell. 1892. 8°. 344 pp. 13 pi. 
Price 25 cents. 
86. Correlation Papers— Archean and Algonkian, by C. 11. Van Hise. 1892. 8°. 549 pp. 12 pi. 
Price 25 cents. 
87. A Synopsis of American Fossil Brachiopoda, including Bibliography and Synonymy, by Charles 
Schuchert. 1897. 8°. 464 pp. Price 25 cents. 
88. The Cretaceous Foraminifera of New Jersey, by Rufus Mather Bagg, jr. 1898. 8°. 89 pp. 6 pi. 
Price 10 cents. 
89. Some Lava Flows of the Western Slope of the Sierra Nevada, California, by F. Leslie Ransome. 
1898. 8°. 74 pp. 11 pi. Price 15 cents. 
90. A Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 
Year 1890-'91. F. W. Clarke, Chief Chemist. 1892. 8°. 77 pp. Price 10 cents. 
91. Record of North American Geology for 1890, by Nelson Horatio Darton. 1891. 8°. 88 pp. Price 
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92. The Compressibility of Liquids, by Carl Barus. 1892. 8°. 96 pp. 29 pi. Price 10 cents. 
93. Some Insects of Special Interest from Florissant, Colorado, and Other Points in the Tertiaries 
of Colorado and Utah, by Samuel Hubbard Scudder. 1892. 8°. 35 pp. 3 pi. Price 5 cents. 
94. The Mechauism of Solid Viscosity, by Carl Barus. 1892. 8°. 138 pp. Price 15 cents. 
95. Earthquakes in California in 1890 and 1891, by Edward Singleton Holden. 1892. 8°. 31 pp. 
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96. The Volume Thermodynamics of Liquids, by Carl Barus. 1892. 8°. 100 pp. Price 10 cents. 
87. The Mesozoic Echinodermata of the United States, by William Bullock Clark. 1893. 8°. 207 
pp. 50 pi. Price 20 cents. 
98. Flora of the Outlying Carboniferous Basins of Southwestern Missouri, by David White. 1893. 
8°. 139 pp. 5 pi. Price 15 cents. 
99. Record of North American Geology for 1891, by Nelson Horatio Darton. 1892. 8°. 73 pp. 
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100. Bibliography and Index of the Publications of the U. S. Geological Survey, 1879-1892, by Philip 
Creveling Warman. 1893. 8°. 495 pp. Price 25 cents. 
101. Insect Fauna of the Rhode Island Coal Field, by Samuel Hubbard Scudder. 1893. 8 D . 27 pp. 
2 pi. Price 5 cents. 
102. A Catalogue and Bibliography of North American Mesozoic Invertebrata, by Cornelius Breck- 
inridge Boyle. 1893. 8°. 315 pp. Price 25 cents. 
103. High Temperature Work in Igneous Fusion and Ebullition, chiefly in Relation to Pressure, by 
Carl Barus. 1893. 8°. 57 pp. 9 pi. Price 10 cents. 
104. Glaciation of the Yellowstone Valley north of the Park, by Walter Harvey Weed. 1893. 8°. 
41 pp. 4 pi. Price 5 cents. 
105. The Laramie and the Overlying Livingston Formation in Montana, by Walter Harvey Weed, 
with Report on Flora, by Frank Hall Knowlton. 1893. 8°. 68 pp. 6 pi. Price 10 cents. 
106. The Colorado Formation and its Invertebrate Fauna, by T. W. Stanton. 1893. 8°. 288 pp. 
45 pi. Price 20 cents. 
107. The Trap Dikes of the Lake Champlain Region, by James Furman Kemp and Vernon Free- 
man Marsters. 1893. 8°. 62 pp. 4 pi. Price 10 cents. 
108. A Geological Reconnoissance in Central Washington, by Israel Cook Russell. 1893. 8°. 108 pp. 
12 pi. Price 15 cents. 
109. The Eruptive and Sedimentary Rocks on Pigeon Point, Minnesota, and their Contact Phenom- 
ena, by William Shirley Bayley. 1893. 8°. 121 pp. 16 pi. Price 15 cents. 
110. The Paleozoic Section in the Vicinity of Three Forks, Montana, by Albert Charles Peale. 1893. 
8°. 56 pp. 6 pi. Price 10 cents. 
111. Geology of the Big Stone Gap Coal Field of Virginia and Kentucky, by Marius R. Campbell. 
1893. 8°. 106 pp. 6 pi. Price 15 cents. 
112. Earthquakes in California in 1892, by Charles D. Perrine. 1893. 8°. 57 pp. Price 10 cents. 
113. A Report of Work done in the Division of Chemistry during the Fiscal Years 1891-'92 and | 
1892-'93. F.W. Clarke, Chief Chemist. 1893. 8°. 115 pp. Price 15 cents. 
114. Earthquakes in California in 1893, by Charles D. Perrine. 1894. 8°. 23 pp. Price 5 cents. 
115 A Geographic Dictionary of Rhode Island, by Henry Gannett. 1894. 8°. 31 pp. Price 5 cents. 
116. A Geographic Dictionary of Massachusetts, by Henry Gannett. 1894. 8°. 126 pp. Price 15 
cents. 
117. A Geographic Dictionary of Connecticut, by Henry Gannett. 1894. 8°. 67 pp. Price 10 cents. 
118. A Geographic Dictionary of New Jersey, by Henry Gannett. 1894. 8°. 131pp. Price 15 cents. 
119. A Geological Reconnoissance in Northwest Wyoming, by George Homans Eldridge. 1894. 8 D . 
72 pp. 4 pi. Price 10 cents. 
120. The Devonian System of Eastern Pennsylvania and New York, by Charles S. Prosser. 1895. 
8°. 81 pp. 2 pi. Price 10 cents. 
