— BB l8 — 
Colonie du Transvaal. 
Johannesbourg. Geological society of South-Africa. 
Aimais of the South africain, muséum . 
Halifax. 
Ottawa. 
Amérique. 
Canada. 
Nova-Scotian institute of science. 
Geological survëy of Canada. 
Royal Society of Canada. 
Toronto. 
Canadian Institute. 
Chili. 
Santiago. 
Société Scientifique de Chili. 
Etats-Unis. 
Baltimore. 
Berkeley. 
Boston. 
American Chemical journal. 
University of California. Department of geology 
American Academy of arts and sciences. 
Society of natural history. 
Cambridge. Muséum of comparative zoology 
Chicago. 
Academy of sciences. 
Jo urn a l of geo logy. 
Colorado. 
Columbus. 
College studies. 
Geological survey of Ohio. 
Davenport. Academy of natural sciences. 
Denver. Colorado scientific society. 
Des-Moines. Jowa geological survey. 
Hamilton. Hamilton Association. 
Indianapolis. Indiana academy of sciences. 
Jefferson. 
Missouri geological survey. Bureau of geology and 
mines. 
Lansing. 
Lawrence. 
Madison. 
Michigan academy of sciences. 
Office of Kansas University quaterly. 
Wisconsin academy of sciences, arts and letters. 
Wisconsin geological and natural history survey. 
Missoula . University of Montana. 
New-Haven. American journal of sciences. 
