ADVERTISEMENT. V 
59. The Gabbros and Associated Rocks in Delaware, by Frederick D. Chester. 1890. 8°. 45 pp. 
1 pi. Price 10 cents. 
60. Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal Year 
1887-'88. F. W. Clarke, Chief Chemist. 1890. 8°. 174 pp. Price 15 cents. 
61. Contributions to the Mineralogy of the Pacific Coast, by "William Harlow Melville and Waldemar 
Lindgren. 1890. 8°. 40 pp. 3 pi. Price 5 cents. 
62. The Greenstone Schist Areas of the Menominee and Marquette Regions of Michigan; a Contri- 
bution to the Subject of Dynamic Metamorphism in Eruptive Rocks, by George Huntington Williams; 
with an Introduction by Roland Duer Irving. 1890. 8°. 241pp. 16 pi. Price 30 cents. 
63. A Bibliography of Paleozoic Crustacea from 1698 to 1889, including a List of North American 
Species and a Systematic Arrangement of Genera, by Anthony W. Yogdes. 1890. 8°. 177 pp. Price 
15 cents. 
64. A report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 
Year 1888-89. F. W. Clarke, Chief Chemist. 1890. 8°. 60 pp. Price 10 cents. 
65. Stratigraphy of the Bituminous Coal Field of Pennsylvania, Ohio, and West Yirginia, by Israel 
C.White. 1891. 8°. 212 pp. 11 pi. Price 20 cents. 
66. On a Group of Yolcanic Rocks from the Tewan Mountains, New Mexico, and on the Occurrence 
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°. 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 Bibliography of Fossil Insects, by Samuel Hubbard Scudder. 1890. 
8°. 101 pp. Price 15 cents. 
70. 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 Yiscosity 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. 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°. 131pp. Price 15 cents. 
79. A Late Yolcanic Eruption in Northern California and its Peculiar Lava, by J. S. Diller. 1891. 
8°. 33 pp. 17 pi. Price 10 cents. 
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°. 447 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 
Sohuchert. 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, 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. Price 
10 cents. 
92. The Compressibility of Liquids, by Carl Barus. 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 Yiscosity, by Carl Barus. 1892. 8°. 138 pp. Price 15 cents. 
