6 



16. Vol. III. The Vertebrata of the Eocene Formations of the West, 

 by Prof. E. D. Cope. 



17. Vol. IV. The Vertebrata of the Miocene and Pliocene Forma- 

 tions of the West, by Prof. E. D. Cope. 



18. Vol. V. Synopsis of the Acridida? of Xorth America, by Prof. 

 Cyras Thomas. 



19. Vol VI. Contribntioua to the Fossil Flora of the Cretaceons and 

 Tertiary Formations of the West, by Prof. J. S. I^ewberry. 



20. Vol. VII. The Fossil Flora of the Cretaceous Formations of the 

 Western Territories, by Prof. Leo Lesquereux. 



21. Vol. VIII. The Fossil Flora of the Tertiary Formations of the 

 Western Territories, by Prof. Leo." Lesquereux. 



22. Vol. IX. The Fossil Invertebrata of the Western Territories, by 

 F. B. Meek. 



23. Vol. X. Sections, Profiles, and other Illustrations of the Geology 

 of the Western Territories explored by the Survey, with descriptive 

 text, by F. V. Ilayden, U. S. Geologist in Charge. In three parts. 



24. Sections, Profiles, &c., a portion of Xo. 23. Only 100 copies pub- 

 lished — will be reproduced in Xo. 23. 



. Maps. 



Prepared Jnj the United States Geological /Survey of the Territories. 



1871. 



1. Yellowstone Lake. 



2. Lower Geyser Basin of Firehole River. 



3. Upper Geyser Basin of Firehole Eiver. 



4. Yellowstone Xational Park. 



5. Parts of Idaho, Montana, and Wyoming Territories. Preliminary 

 map for field use. 



1872. 



6. Map of the Lower Geyser Basin of Firehole River, resurveyed by 

 Bechler in 1872, and beautifully engraved on stone, (scale 8 miles to 1 

 inch.) 



7. Map of Upper Geyser Basin of Firehole River. 



. 8. Map of Lake Henry and the Sources of the West Fork of Snake 

 River. 



9. Map of Shoshone Geyser Basin and Lake. 



10. Map of the Sources of Snake River, (reduced from the final map.) 



11. Montana and Wyoming rerritories, embracing most of the country 

 about the sources of the Madison, Gallatin, and Yellowstone Rivers, in 

 contour lines. (Final map on a scale of 5 miles to 1 inch.) 



12. Map of the Sources of Snake River and its Tributaries. (Final 

 map scale 5 miles to 1 inch.) 



13. Field map of Colorado based on the United States land survey, 

 during the season of 1873. 



