LIBRARY CATALOGUE SLIPS. 



United States. Department of the interior. ( T. >S. geological survey.) 



Department of the interior | — | Monographs | of the | United 

 States geological survey | Volume XXX | [Seal of the depart- 

 ment] | Washington | government printing office | 1898 



Second title: United States geological survey | Charles D. 

 Walcott, director | — | Fossil medusae | by | Charles Doolittle 

 Walcott | [Viguette] | 



Washington | government printing office. | 1898 



4°. ix,201pp. 47 pi. 



Walcott (Charles Doolittle). 



United States geological survey | Charles D. Walcott, di- 

 rector | — | Fossil medusae | by | Charles Doolittle Walcott | 

 g [Vignette] | 



tj Washington | government printing office | 1898 



** 4°. ix, 201 pp. 47 pi. 



[United States. Department of the interior. ( V. S. geological survey.) 

 Monograph XXX.] 



United States geological survey | Charles D. Walcott, di- 

 rector | — | Fossil medusie | by | Charles Doolittle Walcott | 

 [Vignette] | 



Washington | government printing office | 1898 



4°. ix, 201 pp. 47 pi. 



[United States. Department of the interior. (U. S. geological turvey.) 

 Monograph XXX.] 



