VI : ADVERTISEMENT. 
110. The Paleozoic Section in the Vicinity of Three Forks, Montana, by Albert Charles Peale. 
893. 8°. 56 pp. 6 pl. Price 10 cents. 
111. Geology of the Big Stone Gap Coal Fields of Virginia and Kentucky, by Marius R. Camp- 
bell. 1893. 8°. 106 pp. 6pl. 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. 1°. 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°. 31pp. Price 
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116. A Geographie Dictionary of Massachusetts, by Henry Gannett. 1894. 8°. 126 pp. Price 
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117. A Geographic Dictionary of Connecticut, by Henry Gannett. 1894. 8°. 67 pp. Price 10 
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118. A Geographic Dictionary of New Jersey, by Henry Gannett. 1894. 8°. 131 pp. Price 15 
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119. A Geological Reconnoissance in Northwest Wyoming, by George Homans Eldridge. 1894. 
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: 120. The Devonian System of Eastern Pennyslvania and New York, by Charles S. Prosser. 1894. 
8°. 81 pp. 2pl. Price 10 cents. 
121. A Bibliography of North American Paleontology, by Charles Rollin Keyes. 1894. 8°. 251 
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122. Results of Primary Triangulation, by Henry Gannett. 1894. 8°. 412 pp. 17 pl. Price 
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123. A Dictionary of Geographic Positions, by Henry Gannett. 1895. 8°. 183 pp. 1pl. Price 
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124. Revision of North American Fossil Cockroaches, by Samuel Hubbard Seudder. 1895. 8°. 
176 pp. 12pl. Price 15 cents. 
125. The Constitution of the Silicates, by Frank Wigglesworth Clarke. 1895. 8°. 109 pp. 
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126. A Mineralogical Lexicon of Franklin, Hampshire, and Hampden counties, Massachusetts, 
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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 pl. Price 15 cents. 
129. Earthquakes in California in 1894, by Charles D. Perrine. 1895. 8°. 25pp. Price 5 cents. 
130. Bibliography and Index of North American Geology, Paleontology, Petrology, and Miner- 
alogy 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. 1896. 8°. 
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133. Contributions to the Cretaceous Paleontology of the Pacific Coast: The Fauna of the 
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134. The Cambrian Rocks of Pennsylvania, by Charles Doolittle Walcott. 1896. 8°. 43 pp. 
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135. Bibliography and Index of North American Geology, Paleontology, Petrology, and Miner- 
alogy for the Year 1894, by F. B. Weeks. 1896. 8°. 141 pp. Price 15 cents. 
136. Voleanic Rocks of South Mountain, Pennsylvania, by Florence Bascom. 1896. 8°. 124 pp. 
28 pl. Price 15 cents. 
137. The Geology of the Fort Riley Military Reservation and Vicinity, Kansas, by Robert Hay. 
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158. Artesian-well Prospects in the Atlantic Coastal Plain Region, by N. H. Darton. 1896. 8°: 
228 pp. 19 pl. Price 20 cents. 
139. Geology of the Castle Mountain Mining District, Montana, by W. H. Weed and L. V. Pirs- 
son. 1896. 8°. 164 pp. 17 pl. Price 15 cents. 
140. Report of Progress of the Division of Hydrography for the Calendar Year 1895, by Frederick 
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141. The Eocene Deposits of the Middle Atlantic Slope in Delaware, Maryland, and Virginia, 
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142. A Brief Contribution to the Geology and Paleontology of Northwestern Louisiana, by 
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143. A Bibliography of Clays and the Ceramic Arts, by John C. Branner. 1896. 8°. 114 pp. 
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144. The Moraines of the Missouri Coteau and their Attendant Deposits, by James Edward Todd. 
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145. The Potomac Formation in Virginia, by W. M. Fontaine. 1896. 8°. 149 pp. 2pl. Price 
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146. Bibliography and Index of North American Geology, Paleontology, Petrology, and Miner- 
alogy for the Year 1895, by F. B. Weeks. 1896. 8°. 130 pp. Price 15 cents. 
