II 
ADVERTISEMENT. 
lit;. Bibliography and index of North American geology, paleontology, petrology, and mineralogy' 
for the year 1895, by Fred Boughton Weeks. 1896. 130 pp. 
149. Bibliography and index of North American geology, paleontology, petrology, and mineralogy] 
for the vea'r 1896, by Fred Boughton Weeks. 1897. 152 pp. 
156. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for the year 1897, by Fred Boughton Weeks. 1898. 130 pp. 
L62. Bibliography and index of North American geology, paleontology, petrology, and mineralogy] 
for the year 1898, by Fred Boughton Weeks. 1899. 163 pp. 
172 Bibliography and index of North American geologv, paleontology, petrology, and mineralogy 
for the vea'r 1899, by Fred Boughton Weeks. 1900. 141 pp. 
177. Catalogue and index of the publications of the United States Geological Survey, 1880-1901, bj 
Philip Creveling Warman. 1901. 858 pp. 
188. Bibliography of North American geology, paleontology, petrology, and mineralogy for the vearj 
1892-1900, inclusive, by Fred Boughton Weeks. 1902. 717 pp. 
L89. Index to North American geology, paleontology, petrology, and mineralogy for the years 1892-1 
1900, inclusive, by Fred Boughton Weeks. 1902. 337 pp. 
203. Bibliography and' index of North American geology, paleonology, petrology, and mineralogy 
for the year 1901, by Fred Boughton Weeks. 1902. 144 pp. 
215. Catalogue and index of the publications of the United States Geological Survey, 1901 to 1903, b| 
Philip Creveling Warman. 1903. 234 pp. 
221. Bibliography and index of North American geologv, paleontology, petrology, and mineralogy 
f< ir the year 1902, by Fred Boughton Weeks. 1903. 200 pp. 
222. Catalogue and index ot the publications of the Hayden, King, Powell, and Wheeler surveys, b| 
L. F. Schmeckebier. 1904. 208 pp. 
■I'll. The United States ( reological Survey, its origin, development, organization, and operations, 11)04. 
205 pp. 
240. Bibliography and index of North American geologv, paleontology, petrology, and mineralogy 
for the year 1003, by Fred Houghton Weeks. 1904. 243 pp. 
271. Bibliography and index of North American geology, paleontology, petrology, and mineralogj 
for the year 1904, by Fred Boughton Weeks. 1905. 218pp. 
Correspondence should be addressed t<> 
The Director, 
United States Geological Survey, 
Washington, l>. C. 
An,, st, L905. 
