( XX ) 
TCHÉCOSLOVAQUIE. 
Prague. — Ceske Acadétnie 
Société royale des sciences de Bohême. 
Y0U(JO-SLAVIE. 
Ag^raiti. — Académie Sudo- Slave des sciences. 
AMERIQUE. 
ÉTATS-UNIS. 
Arbor (Mich). — University of Michigan (Library). 
Austin. — Texas Academy of sciences. 
Baltimore. — American Journal of mathematics. (Johns Hopkins 
University. J 
Berkeley (Col.) — University of California (Press). 
Boston. — American Academy of arts and sciences. 
Society of natural Hislory. 
Cambridge (Mass.). — Muséum of comparative Zoolo'gy. 
Cliicag^o. — Field Muséum of natural hislory. 
University of Chicago (Lihraries). 
Cincinnati (0.) — American association for the advancement 
of sciences. 
Cold l§pring: Harbor (N.Y.). — Carnegie Institution (station 
for expérimentale évolution). 
Colorado. — Colorado Collège (bureau des publications). 
Bes Moines (lowa). — Geological Surveij . 
liawrenee (Kan). — The Kansas University (Science Bulletin). 
Eiincoln (Neb.). — University of Nebraska. 
Madison. — Wisconsin Academy of sciences y letters and arts. 
Geological Survey. 
new-Haven. — Conneclicul Academy of arts and sciences. 
