ADVERTISEMENT. V 



65. Stratigraphy of the Bituminous Coal Field of Pennsylvania, Ohio, and West Virginia, by 

 Israel C. WHite. 1891. 8 C . 212 pp. 11 pi. 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 C . 82 pp. Price 10 cents. 



68. Earthquakes in California in 1889, by James Edward Keeler. 1890. 8°. 25 pp. Price 5 

 cents. 



69. A Classed and Annotated Biography of Fossil Insects, by Samuel Howard Scndder. 1890. 

 8 G . 101pp. 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 Scndder. 1891. 8 C . 744 pp. Price 50 cents. 



72. Altitudes between Lake Superior and the Rocky Mountains, by Warren Upkarn. 1891. 8°. 

 229 pp. Price 20 cents. 



73. The Viscosity of Solids, by Carl Barns. 1891. 8°. xii, 139 pp. 6 pi. Price 15 cents. 



74. The Minerals of North Carolina, by Frederick Augustus Gentk. 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. 4 pi. 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 Volcanic 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 pi. 

 Price 25 cents. 



82. Correlation Papers — Cretaceous, by Charles A. White. 1891. 8°. 273 pp. 3 pi. Price 20 

 cents. 



83. Correlation Papers — Eocene, by William Bullock Clark. 1891. 8°. 173 pp. 2 pi. Price 

 15 cents. 



84. Correlation Papers— Neocene, by W. H. Dall and G. D. Harris. 1892. 8°. 349 pp. 3 pi. 

 Price 25 cents. 



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. R. 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 30 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, mainlv 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 10 cents. 



92. The Compressibility of Liquids, by Carl Barns. 1892. 8 C . 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 Mechanism of Solid Viscosity, by Carl Barns. 1892. 8°. 138 pp. Price 15 cents. 



95. Earthquakes in California in 1890 and 1891, by Edward Singleton Holden. 1892. 8°. 31pp. 

 Price 5 cents. 



96. The Volume Thermodynamics of Liquids, by Carl Barns. 1892. 8°. 100 pp. Price 10 cents. 



97. The Mesozoic Echinodermata of the United States, by W.B.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. 

 Price 10 cents. 



100. Bibliography and Index of the Publications of the U. S. Geological Survey, 1879-1892, by 

 Philip Creveling Warnian. 1893. 8°. 495 pp. Price 25 cents. 



101. Insect Fauna of the Rhode Island Coal Field, by Samuel Hubbard Scudder. 1893. 8°. 

 27 pp. 2 pi. Price 5 cents. 



102. A Catalogue and Bibliography of North American Mesozoic Invertebrata, by Cornelius 

 dnridge Boyle. 1892. 8 C . 315 pp. Price 25 cents. 



Breckinri 



