( xxi ) 
Mew-York.. — Academy of sciences. 
Muséum of nalural history. 
American Maihemalical Society. 
Pbiladelpbie. — Academy of nalural sciences. 
American philosophical Society. 
Wagner free Institute of sciences. 
Portlaod. — Natural History Society. 
Rochester. — Academy of sciences. 
ISaint-IiOuls (Mo). — Botanical Garden. 
ISaleiii. — Essex Institute. 
San-Francisco. — Californian Academy of sciences. 
Urbana (111.). — University of Illinois library. 
Waisbington. — Smithsonian Institution. 
Bureau ofethnology. 
BRÉSIL. 
Rio de Janeiro. — Collège Pedro //. 
CANADA. 
Halifam. — Nova Scotian Institute of natural Science. 
Ottawa. — Geological Survey of Canada. 
Toronto. — Canadian Institute. 
CHILI. 
ISantiago. — Société scientifique du Chili. 
MEXIQUE. 
Merida. — Observatoire. 
Mexico. — Société Antonio Alzate, 
Observatoire météorologique central. 
Tacubaya. — Observatoire national. 
