Series. 
Author. 
Subject. 
(Take this leaf out and paste the separated titles upon three of your cata- 
logue cards. The tirst and second titles need no addition; over the third write 
that subject under which you would place the book in your library. 
LIBRARY CATALOGUE SLIPS. 
United States. Department of the interior. (U.S. geological survey.) 
Department of the interior | — | Monographs | of the | United 
States geological survey | Volume XXXI | {Seal of the depart- 
ment] | Washington,| government printing office | 1898 
Second title: United States geological survey | Charles D. 
Walcott, director | — | Geology | of the | Aspen mining district, 
Colorado | with atlas | by | Josiah Edward Spurr | — | Samuel 
Franklin Emmons, geologist in charge | [Vignette] | 
Washington | government printing office | 1898 
4°, xxxy,260pp. 43 pls. and atlas of 30 sheets folio. 
Spurr (Josiah Edward). 
United States geological survey | Charles D. Walcott, di- 
rector | — | Geology | of the | Aspen mining district, Colorado | 
with atlas | by | Josiah Edward Spurr | — | Samuel Franklin 
Emmons, geologist in charge | [Vignette] | 
Washington | government printing office | 1898 
49. xxxv,260pp. 43 pls. and atlas of 30 sheets folio. 
[Unirep STATES. Department of the interior. (U. S. geological survey.) 
Monograph XXXTI.] 
United States geological survey | Charles D. Walcott, di- 
rector | — | Geology | of the | Aspen mining district, Colorado | 
with atlas | by | Josiah Edward Spurr | — | Samuel Franklin 
Emmons, geologist in charge | [ Vignette] | 
Washington | government printing office | 1898 
49, xxxv,260pp. 43 pls. and atlas of 30 sheets folio. 
[Unirep SrarEes. Department of the interior. (U. 8S. geological survey. 
Monograph XXXTI.] 
