1906.] 
NATURAL SCIENCES OF PHILADELPHIA. 
58 L 
•has been due to the eccentricities of the artistic temperament or a 
press of other engagements is not known, but it is believed that the 
beauty of the result will compensate for the delay. The new medal 
will certainly be a great improvement on the one awarded since 1890, 
the portrait of Hayden on the obverse being much more accurate than 
could have been hoped for from the photographs available, while the 
design of the reverse, replacing the unsatisfactory view of the Grand 
Canon, is gracefully emblematic. The die will, it is hoped, be promptly 
engraved, so that the medal, so long due, may be conveyed to Dr. Walcott. 
Mr. Fox has rendered effective assistance in the issue and distribu- 
tion of the Proceedings. 
Edward J. Nolan, 
Recording Secretary. 
REPORT OF THE CORRESPONDING SECRETARY. 
During the past year the deaths of the following correspondents were 
announced from the chair : Baron C. R. von der Osten-Sacken, Elisee 
F. Reclus, Prof. Eugene Renevier, Dionys Stur, and Dr. Henry A. 
Ward. No correspondents were elected. 
Notices of the deaths of seven scientific men of prominence were 
received and suitably acknowledged in letters of condolence. 
There were received invitations to participate in the Tenth Inter- 
national Geological Congress, the International Congress for the Study 
of Polar Regions, the First International Congress of Oceanography, the 
Fifth International Congress of Obstetrics and Gymecology, the Pre- 
historic Congress of France, the Congress of the Latino-Slavic League, 
the celebration of the Fiftieth Anniversary of the foundation of the 
Academy of Science of St. Louis, the celebration of the Two Hundredth 
Anniversary of the birth of Benjamin Franklin and the Dedication of 
the Engineering Building of the University of Pennsylvania. Except 
to the last two, no delegates were appointed by the Academy. The 
invitations were acknowledged by appropriate expressions of interest 
and regret or congratulation. At the last two gatherings the Academy 
was represented by its President, on behalf of whom also the Corre- 
sponding Secretary accepted his appointment by the Society of 
Physical and Natural Sciences of Bordeaux as delegate to the 
Franklin celebration. 
A number of circulars announcing changes in the organization or 
staffs were received from learned societies and museums, and various 
