VI ADVERTISEMENT. 



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

 bell. 1893. 8°. 106pp. 6pl. Price 15 cents. 



112. Earthquakes in California iu 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°. 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 New Jersey, by Henry Gannett. 1894. 8 . 131 pp. Price 15 

 cents. 



119. A Geological Reconnoissance in Northwest Wyoming, by George Humans Eldridge. 1894. 

 8°. 71' pp, Price 10 cents. 



li'l). The Devonian System of Eastern Pennyslvania and New York, by Charles S. Prosser. 1894. 

 8°. 81pp. 2 pi. Price 10 cents. 



121. A Bibliography of North American Paleontology, by Charles Rolliu 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 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 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 3 . 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 Winsluw. 18S»(i. 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'. l.\ 1'. II. Weeks. 1896. 8°. 141pp. 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 Rilev 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. II. Weed and L. V. Pirs- 

 son. 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. 



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

 by William Bullock Clark. 1896. 8°. 167 pp. 40pl. 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 AV. M. Fontaine. 1896. 8°. 149pp. 2pl, Price 

 15 cents. 



146. Bibliography and Index of North American Geology, Paleontology, Petrology, and Miner- 

 alogy to. i be 5 eai 1895, by F. It. Weeks. 1896. 8°. 130 pp. "Price 15 cents. 



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

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



