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64. A Report of Work done in the Division of Chemistry .md Physios, mainly during the Fiscal 

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t;">. Stniti'Traphy of the ]5itumiiiou.s (Joal Field of Pennsylvania, (Jhio, and West Virginia, by 

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67. The Relations of the Traps of the Newark System in the Now .ler.sey Region, by Nelson 

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68. Earthquakes in California in 1889, by James Edward Keeler. 1890. 8". 2.5 pp. Price 5 

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69. A Classed and Annotated Hiography of Fossil Insects, by Saninel Howard Scudder. 1890. 

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70. A Report on Astronomical Work of 1889 and 1890, by Robert Simpson Woodward. 1890. 8'^. 

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71. Index to the Known Fossil Insects of the World, including Myriai)oils and Arachnids, by 

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72. All itudrs between Lake Superior and the Rocky Mountains, by Warren Ipliam. 1891. 8°. 

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T.i. file Viscosity of Solids, by Carl Barns. 1891. 8^. xii, 189 y\i. 6 pi. Price 15 cents. 



74. The Minerals of North Carolimi, by Frederick Augustus (Jenth. isiil. 8^ 119 pp. Price 

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75. Record of North American Geology for 1887 to 1889, inclusive, by Nelson Horatio Darton. 

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76. A Dictionary of Altitudes in the United States (Second Edition), compiled by Henry Gannett, 

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77. The Texan Permian and its Mesozoic Types of Fossils, by Cliarles A. White. 1891. 8^. 51 

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78. A Report of Work done in the Division of Chemistry and Physics, mainly during the I'iscal 

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79. A Late A'olcanic Eruption in Northern California and its PcH'uliar Lava, by J. S. Diller. 



W). Correlation Papers — Devonian and Carboniferous, by Henry Shaler Williams. 1891. 8°. 

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81. Correlation Papers— Cambrian, by Charles Doolittle Walcott. 1891. 8^. 547 pp. 8 i)l. 

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82. Correlation Papers— Cretaceous, by Charles A. White. 1891. 8'^. ?73 pj). 3 pi. Price 20 

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83. Correlation Papers— Eocene, by William Bullock Clark. 1891. 8^. 178 pp. 2 pi. Price 

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



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85. Correlation Papers— The Newark System, by Israel Cook Russell. 1892. 8^\ 344 ]ip. 13 pi. 

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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 

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88. The Cretaceous Foramiuifera of New Jersey, by Rufus Mather Bagg, Jr. 1898. S^. 88 pp. 

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89. Some Lava Flows of the Western Slope of the Sierra Nevada, California, by F. Leslie 

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90. A Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 

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91. Record of North American Geology for 1890, by Nelson Horatio Dartou. 1891. 8"^. 88 pp. 

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92. The Comprcssiliility of Liciuids, by Carl B.irns. 1892. 8°. 96 pp. 29 pi. Price 10 cents. 



93. Some Insects oC Siiccial Interest licim I'lorissant, Colorado, and Other Points in the Terti.aries 

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94. Tln^ Mechanism ..f Solid \ise.isity, l)y Carl Kariis. 1892. S^. 138 pp. Price 15 cents. 



95. Earthquakes in Califoniia in 1«MI anil 1891, iiy Edward Singleton Holdeu. 1892. 8°. 31pp. 

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96. The Volume Thermodvnaniics of Li<iuids, by Carl Barns. 1892. 8\ 100pp. Price 10 cents. 



97. The Mesozoic Echiuo(\ermaTa of the United States, by W. B.Clark. 1893. 8'>. 207 pp. .50pl. 

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98. Flora of the Outlying Carboniferous Basins of Soutliwestein Missouri, by David White. 

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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 

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

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