NOTICE. 
In this edition of the Directory, all names which have been heard 
from since the last issue are followed by an (*). In the American 
portion of the Directory, names which are followed by an (?) have 
not replied to the blanks sent them for at least two years, and all 
such will be dropped from the next edition of the work, unless 
heard from in the meantime. Names which are not followed by 
an (*) or an (?) are, without doubt, correct, but have failed to reply 
to the last blanks sent to their address. 
For convenience, an index has been placed in the front of the 
book, and the list of abbreviations will be found immediately fol- 
lowing. 
Thanks are due to many persons who have assisted us in the 
compilation of this volume. 
Dr. Henrik Saute, Jr., Stockholm, of the Geological Survey of 
Sweden, has entirely revised the list of Sweden scientists and the 
credit for its accuracy is due to him. 
The following persons have been of much assistance in furnish- 
ing names and corrections for their respective countries: 
(Jontino Alfred Caruaua-G-atto, Valetta, Malta. Prof. N. Willie, 
Univ. Christiana, Norway. H. Backstrpm of Stockholm, Sweden. 
F. A. A. Skuse, Sydney, N. S. W. Dr. Carlos Berg, Univ. Buenos 
Ayres, Argentine Republic, S. A. Dr. J. G. Boerlage, Conserv. 
's Rijks Herbarium, Leiden, Netherlands. Max Lohest, Rivage, 
Belgium. Prof. Lewis Swift, Warner Obseiv., Rochester, N. Y. 
Dr. Joshua Lindahl, State Geol. of Illinois, Chicago, III. O. A. 
Derby, Rio de Janeiro, Brazil. G. O. Clerc, Yekaterinboorg, Russia 
an Asia. J. J. Rodriguez, Guatemala. Dr. A. A. Downing, Gran- 
ada, Nicaragua. Francis E. de la Seigliere, Cherchel, Algeria, 
Africa. Joaquim Filippe-Nery Delgado and Richard H. Wettnich, 
of Lisbon, Portugal. Dr. J. J. Sederholm, Helsingsfors, Finland. 
Dr. A. Lyons, Honolulu, H. I. C. A. Barber, St. John's, Antigua. 
C. Ishikawa, Imperial Univ., Tokio, Japan. Dr. K. J. V. Steens. 
trup, Copenhagen, Denmark. Miss M. A. Booth, Locgmeadow* 
Mass. 
All changes of address should be reported to the editor, Bos- 
ton, Mass., for future editions. 
