VI ADVERTISEMENT. 



111. Geologv of the Big Stone Gap Coal Fields of Virginia and Kentucky, by Marius R. Camp- 

 bell. 1893. 8^. 106 pp. 6 pi. Price 15 tents. 



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. 



lU. 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°. 126 pp. Price 

 15 cents. 



117. A Geographic Dictionary of Connecticut, by Henry Gannett. 1894. 8^. 67 pp. Price 10 

 cents. 



118. A Geographic Dictionary of 'Nevr 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. Price 10 cents. 



120. The Devonian Svstem of Eastern Pennyslvania and New York, by Charles S. Prosser. 1894. 

 S'^. 81 pp. 2 pi. Price 10 cents. 



121. A Bibliography of North American Paleontology, by Charles Rollin Keyes. 1894. S°. 251 

 pp. Price 20 cents. 



122. Results of Prim.ary Triangulation, by Henry Gannett. 1894. 8^. 412 pp. 17 i>l. 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 Wigglesworth 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 Dartou. 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 Miner- 

 alogy for 1892 and 1893, by Fred Houghton 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°. 

 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 Miner- 

 alogy for the Year 1894, by F. B. Weeks. 1896. 8°. 141 pp. Price 15 cents.' 



136. Volcanic Rocks of South Mountain, Pennsylvania, by Florence Bascom. 1896. 8^. 124 pp. 

 28 pi. Price 15 cents. 



137. The Geology of the Fort Riley Military Reservation and Vicinity, Kansas, by Robert Hay. 

 1896. 8-\ 35 pp. 8 pi. Price 5 cents. 



138. Artesian-well Prospects in the Atlantic Coastal Plain Region, by N. H. Darton. 1896. 8°. 

 228 pp. 19 pi. Price 20 cents. 



139. Geology of the Castle Mountain Mining District, Montana, by W. H. Weed and L. V. Pirs- 

 sou. 1896. 8^. 164 pp. 17 pi. Price 15 cents. 



140. Report of Progress of the Division of Hydrography for the Calendar Year 1895, by Frederick 

 Haynes Newell, Hydrographer in Charge. 1896. 8". 356 pp. Price 25 cents. 



141. The Eocene Deposits of the Middle Atlantic Slope in Delaware, Maryland, and Virginia, 

 by William Bullock Clark. 1896. »-'. 167 pp. 40 pi. Price 15 cents. 



142. A Brief Contribution to the Geology and Paleontology of Northwestern Louisiana, by T. 

 Wayland Vaughan. 1896. 8"^. 65 pp. 4 pi. Price 10 cents. 



143. A Bibliography of Clays and the Ceramic Arts, by John C. Branner. 1896. 8°. 114 pp. 

 Price 15 cents. 



144. The Moraines of the Missouri Coteau and their Attendant Deposits, by James Edward Todd. 

 1896. 8°. 71 pp. 21 pi. Price 10 cents. 



145. The Potomac Formation in Virginia, by W. M. Fontaine. 1896. 8^. 149 pp. 2 pi. Price 

 15 cents. 



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. 



147. Earthquakes in California in 1895, by Charles I). Perrine, Assistant Astronomer in Charge 

 of Earthquake Observations at the Lick Observatory. 1896. 8". 23 pp. Price 5 cents. 



