LIBRARY CATALOGUE SLIPS, 
United States. Department of the interior. ( U. S. geological survey.) 
Department of the interior | — | Bulletin | of the | United 
States | geological survey | no. 136 | [Seal of the department] | 
Washington | government printing office | 1896 
Second title: United States geological survey | Charles D. 
Walcott, director | — | The | ancient volcanic rocks | of | South 
Mountain, Pennsylvania | by | Florence Bascom | [Vignette] | 
Washington | government printing office I 1896 
8°. 124 pp. 28 pi. 
Bascom (Florence). 
United States geological survey | Charles D. Walcott, di- 
rector | — | The | aucient volcanic rocks | of | South Mountain, 
Pennsylvania | by | Florence Bascom | [Vignette] | 
Washington | government printing office | 1896 
8°. 124 pp. 28 pi. 
[United States. Department of the interior. (V. S. geological survey.) 
Bulletin 136.] J ' 
United States geological survey | Charles D. Walcott, di- 
rector | — | The | ancient volcanic rocks of | South Mountain 
Pennsylvania | by | Florence Bascom | [Vignette] | 
Washington | government printing office | 1896 
8°. 124 pp. 28 pi. 
* !, U ^ T fo D * f TATES ' De P artment °f th * ™te™r. (TT. S. geological survey.) 
Bulletin 136.] y 
