( Xx1 ) 
AMÉRIQUE. 
ETATS-UNIS. 
Austin. — Texas Academy of sciences. 
Baltimore. — American Journal of mathematics. Johns Hopkins 
University.) 
Boston. — American Academy of arts and sciences. 
Society of natural History. 
Madison. — Wisconsin Academy of sciences, letters and arts. 
New-Haven. — Connecticut Academy of arts and sciences. 
New-York. — Academy of sciences. 
Museum of nalural history. 
American Mathematical Society. 
Philadelphie. — Academy of natural sciences. 
American philosophical Society. 
Wagner Free Institute of sciences. 
Portland. — Vatural History Society. 
Rochester. — Academy of sciences. 
Saint-Louis, Mo. — Botanical Garden. 
Salem. -- Essex Institute. 
American Associalion for advancement of sciences. 
San-Francisco. — Californian Academy of sciences. 
Washington. — Smithsonian Institution. 
CANADA. 
Ottawa. — Geological Survey of Canada. 
Commission de géologie et d'histoire naturelle du Canudua. 
Toronto. — Canadian Institute. 
CHILL. 
Santiago. — Société scientifique du Chili. 
