BB 20 
Neuchâtel. Société des sciences naturelles. 
Zurich. Schweizerisclie naturforcliende gesellscliaft. 
— Eclogae geologae Helvetiae. 
Afrique. 
Colonie du Cap. 
Cupe-Town. Geological Commission. 
Pietermaritzboiirg. Aniials of the natal government muséum. 
Transvaal. 
Johaiinesbourg. Geological society of Soutli-Africa. 
Amérique. 
Canada. 
Halifax. Nova-Scotian institute of science. 
Ottawa. Geological survey of Canada. 
— Royal Society of Canada. 
Toronto. Canadian Institute. 
Chili. 
Santiago. Société Scientifique du Chili. 
— Sociedad Nacional de Mineria. 
Etats-Unis. 
Baltimore. American Chemical journal. 
Berkeley. University of California. Department of geology. 
Boston. American academy of arts and sciences. 
— Society of natural history. 
Cambridge. Muséum of comparative zoology. 
Chicago. Academy of sciences. 
— Journal of geology. 
Colorado. College Studies. 
Colombus. Geological survey of Ohio. 
Davenport. Academy of natural sciences, 
Denver. Colorado scientific society. 
