VI ADVERTISEMENT. 
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 Warntan. 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 Breck- 
inridge Boyle. 1893. 8°. 315 pp. Price 25 cents. 
103. High Temperature Work in Igneous Fusion and Ebullition, chiefly in Relation to Pressure, by 
Carl Barus. 1893. 8°. 57 pp. 9 pi. Price 10 cents. 
104. Glaciation of the Yellowstone Valley north of the Park, by Walter Harney Weed. 1893. 8° 
41pp. 4 pi. Price 5 cents. 
105. The Laramie and the Overlying Livingston 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 the Lake Cliamplain Region, by James Furman Kemp and Vernon Free 
man Marsters. 1893. 8°. 62 pp. 4 pi. Price 10 cents. 
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 Phenom 
ena, by William Shirley Bayley. 1893. 8°. 121pp. 16 pi. Price 15 cents. 
110. The Paleozoic Section in the Vicinity of Three Forks, Montana, by Albert Charles Peale. 1893 
8°. 56 pp. 6 pi. Price 10 cents. 
111. Geology of the Big Stone Gap Coal Field of Virginia and Kentucky, by Marius R. Campbell 
1893. 8°. 106 pp. 6 pi. Price 15 cents. 
112. Earthquakes in California in 1892, by Charles D. Perrine. 1893. 8°. 57 pp. Price 10 cents. 
113. A Report of Work done in the Division of Chemistry during the Fiscal Years 1891-'92 and 
1892-'93. F. W. Clarke, Chief Chemist. 1893. 8°. 115 pp. Price 15 cents. 
114. Earthquakes in California in 1893, by Charles D. Perrine. 1894. 8°. 23 pp. Price 5 cents. 
115. A Geographic Dictionary of Rhode Island, by Henry Gannett. 1894. 8°. 31 pp. Price 5 cents. 
116. A Geographic Dictionary of Massachusetts, by Henry Gannett. 1894. 8°. 126pp. Price 15 cents. 
117. A Geographic Dictionary of Connecticut, by Henry Gannett. 1894. 8°. 67 pp. Price 10 cents. 
118. A Geographic Dictionary of New Jersey, by Henry Gannett. 1894. 8°. 131 pp. Price 15 cents. 
119. A Geological Reconnoissance in Northwest Wyoming, by George Homans Eldridge. 1894. 8°. 
72 pp. 4 pi. Price 10 cents. 
120. The Devonian System of Eastern Pennsylvania and New York, by Charles S. Prosser. 1895. 
8°. 81 pp. 2 pi. Price 10 cents. 
121. A Bibliography of North American Paleontology, by Charles Rollin Keyes. 1894. 8°. 251 pp. 
Price 20 cents. 
122. Results of Primary Triangulation, by Henry Gannett. 1894. 8°. 412 pp. 17 pi. Price 25 cents. 
123. A Dictionary of Geographic Positions, by Henry Gannett. 1895. 8°. 183 pp. 1 pi. Price 15 
cents. 
124. Revision of North American Fossil Cockroaches, by Samuel Hubbard Scudder. 1895. 8°. 176 
pp. 12 pi. Price 15 cents. 
125. The Constitution of the Silicates, by Frank Wiggles worth Clarke. 1895. 8°. 109 pp. Price 15 
cents. 
126. A Mineralogical Lexicon of Franklin, Hampshire, and Hampden Counties, Massachusetts, by 
Benjamin Kendall Emerson. 1895. 8°. 180 pp. 1 pi. Price 15 cents. 
127. Catalogue and Index of Contributions to North American Geology, 1732-1891, by Nelson 
Horatio Darton. 1896. 8°. 1045 pp. Price 60 cents. 
128. The Bear River Formation and its Characteristic Fauna, by Charles A. White. 1895. 8°. 108 
pp. 11 pi. Price 15 cents. 
129. Earthquakes in California in 1894, by Charles D. Perrine. 1895. 8°. 25 pp. Price 5 cents. 
130 Bibliography and Index of North American Geology, Paleontology, Petrology, and Mineralogy 
for 1892 and 1893, by Fred Boughton Weeks. 1896. 8°. 210 pp. Price 20 cents. 
131. Report of Progress of the Division of Hydrography for the Calendar Years 1893 and 1894, by 
Frederick Haynes Newell, Topographer in Charge. 1895. 8°. 126 pp. Price 15 cents. 
132. The Disseminated Lead Ores of Southeastern Missouri, by Arthur Winslow. J896. 8°. 31 pp. 
Price 5 cents. 
133. Contributions to the Cretaceous Paleontology of the Pacific Coast: The Fauna of the Knoxville 
Beds, by T. W. Stanton. 1895. 8°. 132 pp. 20 pi. Price 15 cents. 
134. The Cambrian Rocks of Pennsylvania, by Charles Doolittle Walcott. 1896. 8°. 43 pp. 15 pi. 
Price 5 cents. 
135. Bibliography and Index of North American Geology, Paleontology, Petrology, and Mineralogy 
for the Year 1894, by F. B. Weeks. 1896. 8°. 141pp. Price 15 cents. 
