ADVEETISEMENT. V 



66. On a Group of Volcanic Kocks from the Tewan Mountains, New Mexico, and on the ocurrence 

 of Primary Quartz in certain Basalts, by Joseph Paxson Iddings. 1890. 8°. 34 pp. Price 5 cents. 



67. The Eolations of the Traps of tho Newark System in the New Jersey Hegion, by Nelson Horatio 

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



69. A Classed and Annotated Bibliography of Eossil Insects, by Samuel Hubbard Scudder. 1890. 

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70. EeportonAstronomical'Vrorkofl889andl890, by liobert Simpson Woodward. 1890. 8°. 79pp. 

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71. Index to the Known Fossil Insects of the "World, including Myriapods and Arachnids, by Samuel 

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72. Altitudes between Lake Superior and the Eocky Mountains, by Warren Upham. 1891. 8°, 

 229 pp. Price 20 cents. 



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



74. The Minerals of North Carolina, by Frederick Augustus Genth. 1891. S". 119 pp. Price 15 

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75. Eecord of North American Geology for 1887 to 1889, inclusive, by Nelson Horatio Darton. 1891. 

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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 Charles A. White. 1891. 8°. 51 pp. 

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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°. 131pp. Price 15 cents. 



79. A Late Volcanic Eruption in Northern California and its Peculiar Lava, by J. S.DiUer. 1891. 8°. 

 33pp. 17 pi. Price 10 cents. 



80. Correlation papers — Devonian and Carboniferous, by Henry Shaler Williams. 1891. 8°. 279 pp. 

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81. Correlation papers— Cambrian, by Charles Doolittle Walcott. 1891. 8°. 447 pp. 3 pi. Price 

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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 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 

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85. Correlation papers— The Newark System, by Israel Cook Eussell. 1892. 8°. 344 pp. 13 pi. 

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86. Correlation papers — Archean and Algonkian, by C. E. Van Hise. 1892. 8°. 549 pp. 12 pi. 

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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. Eecord 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 Bams. 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 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. 

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



97. The Mesozoic Echinodermata of the United States, by William Bullock Clark. 1893. 8°. 207. 

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98. Flora of the Outlying Carboniferous Basins of Southwestern Missouri, by David White. 1893. 

 8°. 139 pp. 6 pi. Price 15 cents. 



99. Eecord 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 

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101. Insect Fauna of the Ehode Island Coal Field, by Samuel Hubbard Scudder. 1893. 8°. 27 pp. 

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

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103. High Temperature Work in Igneous Fusion and Ebullition, chiefly in relation to pressure, by 

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104. Glaciation of the Yellowstone VaUey north of the Park, by Walter Harvey Weed. 1393. 8°. 

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105. The Laramie and the overlying Livingston Formation in Montana, by Walter Har\'ey Weed, 

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