BB 19 
New-York. Academy of sciences. 
— American Institute of mining Engineers. 
— American Muséum of natural liistory. 
— State Muséum of natural History. University of the 
— New-York State Education departement. 
Philadelphie. American philosophical Society. 
— Franklin institute. 
Rochester. Geological society of america. 
San-Francisco. California Academy of Sciences. 
Urbana. Illinois State geological Survey. University of illinois. 
Washington. Geological Survey of the Territories. Department of 
interior. 
— Smitlisonian Institution. 
Argentine. 
Buenos-A y res. Academia nacional de ciencias. 
— Museo publico. 
Mexique. 
Mexico. Comission geologico. Instituto geologico. 
— Sociedad eientifica « Antonio Alzate ». 
— Sociedad geologica Mexicana. 
PÉROU. 
Lima. Boletin del Cuerpo de ingenieros de minas del Peru. 
Brésil. 
Rio de Janeiro. Commissao de estudos das Minasde Carvao de 
Pedro do Brazil. 
Asie. 
Empire Britannique de l’Inde. 
Calcutta. Asiatic society of Bengal. 
— Geological survey of India. 
Japon. 
Tokio. College of sciences of the Impérial University. 
