ÉCHANGES 



XXI 



SUISSE 



Lausanne. Société géologique Suisse. 



Eclogœ geologicœ Helvetiœ, vol. IV, n os i et 2. 



AMÉRIQUE 



Berkeley. University of California (Department of Geology). 



Bulletin, vol. I, pp. 1-72. 

 Xima. Sociedad Geografica de Lima. 



Boletin, Ano III, 4 e trim. ; Ano IV, I er trim. 

 Quito. Universidad Central del Ecuador. 



Anales, Série IX, n os 62-65 ; Sér. X, n os 66-69. 

 Rochester. N. Y. Geological Society of America. 



Bulletin, vol. 4. 

 Washington. United States Geological Survey. 



Monographs, vol. XIX, XXI, XXII. 



Annual Report, vol. XII (1890-91), Part. I et II; vol. XIII 

 (1891-92), Part. I, II, III. 

 Bulletin, n os 97 à 117. 

 Minerai Resources, 1892, 1893. 



— U.S. Department of Agriculture (Ornithology and Mamma- 

 logy). Bulletin, n° 4. 

 Smithsonian Institution. 

 Annual Report, 1891, 1892. 



AUSTRALIE 



Sydney. Geological Survey of New South Wales (Department of 

 Mines and Agriculture). 



Records, vol. III (1893), part. IV; vol. IV (1894), part. I, II. 

 Memoirs (Geology), n° 5. 

 Annu al Report, 1893. 



— Australian Muséum. 



Report oj Trustées for the Year 1892 and 1893. 



TABLES. 



2. 



