a a ae 
ADVERTISEMENT. 2 V 
65. Stratigraphy of the Bituminous Coal Field of Pennsylvania, Ohio, and West Virginia, by 
Israel C. White. 1891. 8°. 212pp. l1pl. Price 20 cents. 
66. On a Group of Volcanic Rocks from the Tewan Mountains, New Mexico, and on the Occur- 
rence of Primary Quartz in Certain Basalts, by Joseph Paxson Iddings. 1890. 8°. 34 pp. Price 5 
cents. 
67. The Relations of the Traps of the Newark System in the New Jersey Region, by Nelson 
Horatio Darton. 1890. 8°. 82pp. Price 10 cents. 
68. Karthquakes in California in 1889, by James Edward Keeler. 1890. 8°. 25 pp. Price5 
cents. 
69. A Classed and Annotated Biography of Fossil Insects, by Samuel Howard Scudder. 1890. 
8°. 101 pp _ Price 15 cents. 
70. A Report on Astronomical Work of 1889 and 1890, by Robert Simpson Woodward. 1890. 8°. 
79 pp. Price 10 cents. 
71. Index to the Known Fossil Insects of the World, including Myriapods and Arachnids, by 
Samuel Hubbard Scudder. 1891. 8°. 744 pp. Price 50 cents. 
72. Altitudes between Lake Superior and the Rocky Mountains, by Warren Upham. 1891. 8°. 
229 pp. Price 20 cents. 
73. The Viscosity of Solids, by Carl Barus. 1891. 8°. xii, 139 pp. 6 pl. Price 15 cents. 
74. The Minerals of North Carolina, by Frederick Augustus Genth. 1891. 8°. 119 pp. Price 
15 cents. 
75. Record of North American Geology for 1887 to 1889, inclusive, by Nelson Horatio Darton. 
1891. 8°. 173 pp. Price 15 cents. 
76. A Dictionary of Altitudes in the United States (Second Edition), compiled by Henry Gannett, 
Chief Topographer. 1891. 8°. 393 pp. Price 25 cents. 
77. The Texan Permian and its Mesozoic Types of Fossils, by Charles A. White. 1891. 8°. 51 
pp. 4pl. Price 10 cents. = 
78. A Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 
Year 1889~90. F. W. Clarke, Chief Chemist. 1891. 8°. 131 pp. Price 15 cents. 
79. A Late Voleanic Eruption in Northern California and its Peculiar Lava, by J. S. Diller. 
80. Correlation Papers—Devonian and Carboniferous, by Henry Shaler Williams. 1891. 8°. 
279 pp. Price 20 cents. 
81. Correlation Papers—Cambrian, by Charles Doolittle Walcott. 1891. 8°. 547 pp. 3 pl. 
Price 25 cents. 
82. Correlation Papers—Cretaceous, by Charles A. White. 1891. 8°. 273 pp. 3pl. Price 20 
cents. ; : 
83. Correlation Papers—Hocene, by William Bullock Clark. 1891. 8°. 173 pp. 2pl. Price 
15 cents. 
84. Correlation Papers—Neocene, by W. H. Dall and G. D. Harris. 1892. 8°. 349 pp. 3 pl. 
Price 25 cents. ; : 
85. Correlation Papers—The Newark System, by Israel Cook Russell. 1892. 8°. 344 pp. 13 pl. 
Price 25 cents. 
86. Correlation Papers—Archean and Algonkian, by C.R. Van Hise. 1892. 8°. 549 pp. 12 pl. 
Price 25 ceuts. 
87. A Synopsis of American Fossil. Brachiopoda, including Bibliography and Synonymy, by 
Charles Schuchert. 1897. 8°. 464 pp. Price 30 cents. 
88. The Cretaceous Foraminitera of New Jersey, by Rufus Mather Bagg, Jr. 1898. 8°. 89 pp. 
6 pl. Price 10 cents. 
89. Some Lava Flows of the Western Slope of the Sierra Nevada, California, by F. Leslie 
Ransome. 1898. 8°. 74 pp. i11pl. Price 15 cents. 
90. A Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 
Year 189091. 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 10 cents. 
92. The Compressibility of Liquids, by Carl Barus. 1892. 8°. 96pp. 29 pl. 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 Sendder. 1892. 8°. 35 pp. 3pl. Price 5 cents. 
94. The Mechanism 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. 
Price 5 cents. 
96. The Volume Thermodynamics of Liquids, by Carl Barus. 1892. 8°. 100pp. Price 10 cents. 
97. The Mesozoic Echinodermata of the United States, by W.B. Clark. 1893. 8°. 207 pp. 50pl. 
Price 20 cents. 
98. Flora of the Outlying Carboniferous Basins of Southwestern Missouri, by David White. 
1893. 8°. 139 pp. dpl. Price 15 cents. 
99. Record of North American Geology for 1891, by Nelson Horatio Darton. 1892. 8°. 73 pp. 
Price 10 cents. $ 
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°. 
27pp. 2pl. Price 5 cents. 
102. A Catalogue and Bibliography of North American Mesozoic Invertebrata, by Cornelius 
Breckinridge Boyle. 1892. 8°. 315 pp. Price 25 cents. 
