LIBRARY CATALOGUE SLIPS. 



United States. Ihpartment of llie iiilerior. (U. S. geological survey). 



Department of the interior | — | Mouogravhs | of the I United 

 States geological survey I Volume XV-text [plates] | [Seal of the 

 department] | 



Washington | government printing office | 1889 



Second title: United States geological survey | J. W. Powell, 

 director | — | The Potomac | or | Younger Mesozoic llora | by | 

 William Morris Fontaine | [Vignette] | 



Washington | government printing otlico | 1839 



4°. 2 v. text xiv, 377 pp ■. plates x pp. 180 pi. 



Fontaine (William Morris). 



I'nitcd States geological survey | J. W. Powell, director | — | 

 The Potomac | or | Yonnger Mesozoic Uora | by | William Morris 

 Fontaine | [Vignette] | 



Washington | government printing office 1 1889 



4=>. 2 V. text liv, 377 pp; plates x pp. 180 pi. 



(UMTKn States. Department oj the interior. (U. S. geological mrcey). 

 MoDOKrapb XVJ. 



United States geological survey | J. W. Powell, director | — | 

 The Potomac | or | Younger Mesozoic Uora | by | William Morris 

 Fontaine | [Vignette] | 



Washington | governraeut printing office | 1889 



4=. 2 V. text xiv, 377 pp; pl.-iti'« x pp. 1«0 pi. 



IfsiTF.ii Statks. Department of the interior. (U. S. geological furveij). 

 Mouograph XV). 



