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70. A Report on Astronomical Work of 1889 and 1890, bj Robert Simpson W Iward. 1890. 8 C . 



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°. 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 C . xii, 139 pp. 6 pi. 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. 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 ,J . 131 pi'- 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. 

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



cents. 



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

 15 cents. 



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



Price 25 cents. 



85. Correlation Papers— The Newark System, by Israel Cook Russell. 1892. 8 C . 344 pp. 13 pi. 



Price 25 cents. 



86. Correlation Papers — Archean and Algonkian. by C. R. Van Hise. 1892. 8°. 549 pp. 12 pi. 

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87. A Synopsis of American Fossil. Brachiopoda, including Bibliography and Synonymy, by 

 Charles Schuc'hert. 1897. 8°. 464 pp. Price 30 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. 

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92. The Compressibility of Liquids, by Carl Barns. 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 Scndder. 1892. 8°. 35 pp. 3 pi. Price 5 cents. 



91. The Mechanism of Solid Viscositv, bv Carl Barns. 1892. 8°. 138 pp. Price 15 cents. 



95. Earthquakes in California in 1890 and 1891. by Edward Singleton Holden. 1892. s . 31pp. 

 Price 5 cents. 



96. The Volume Thermodynamics of Liquids, bv Carl Barus. 1892. 8°. 100 pp. 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. 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°. 

 27 pp. 2 pi. Price 5 cents. 



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

 Breckinridge Boyle. 1892. 8°. 315 pp. ' Price 25 cents. 



103. High Temperature Work iu Igneous Fusion and Ebullition, chiefly in Relation to Pressure, 

 by Carl Barns. 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 Livingstone 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 Lake ( lhamplain Valley and the Eastern Adirondacks, by James Fnrman 

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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 Phe- 

 nomena, by William Shirley Bayley. 1893. 8°. 121 pp. 16 pi. Price 15 cents. 



