996 
‘Philosophy of Mathematics’: Professor W. J. 
Kerr, Agricultural College of Utah. 
‘Astronomy in the High Schools’: Miss MARY 
Proctor, New York City. 
‘Concerning (a) the Concept of n-Dimensional 
Space and (b) Self-Reciprocal Geometries’: C. J. 
KEYSER, Columbia University. 
“On the Probable Densities of the Satellites of the 
Solar System’: Professor T. J. J. Ser, U.S. Naval 
Observatory. 
‘Photometric Observations of Eros’: 
PARKHURST, New York City. 
‘ The History of Several Fundamental Theorems in 
the Theory of Groups of Finite Order’: Dr. G. A. 
MILLER, Cornell University. 
HENRY M. 
SECTION F. ZOOLOGY. 
Professor Henry B. Ward, secretary, has 
sent the following circular letter to members of 
the section : 
The next meeting of the A. A. A. 8. will be held 
in Denver, Colorado, August 24th to 31st, 1901. The 
opportunity is good for bringing together a large 
number of zoologists and making the meeting par- 
ticularly interesting. 
A provisional program of papers to pe read before 
Section F will be printed within a short time and all 
members are urged to send titles as soon as practi- 
cable. 
Permit me to call your attention to Article 28 of 
the constitution which designates how the sectional 
committee shall complete the final program from ab- 
stracts of papers presented. Kindly conform to the 
conditions as given there. I enclose blanks for titles 
and abstracts of papers. 
The work of section F would be much strengthened 
if a larger number of the morphologists of the country 
were enrolled in its membership. Now that each 
member of the association receives gratis the official 
journal, SCIENCE, it is certainly true that no one can 
afford to be without membership in the organization. 
Will not each present member assist in the work of 
enlarging the membership roll ? 
CONVOCATION WEEK. 
Ir will be remembered that, at the instance 
of a committee of the American Association 
for the Advancement of Science, the Associ- 
ation of American Universities recently took 
action recommending that a convocation week 
be set aside for the meetings of scientific and 
learned societies. Columbia University, Cor- 
SCIENCE. 
(N.S. Vou. XIII. No. 338. 
nell University, the Catholic University of 
America, Clark University and Johns Hopkins 
University have altered their calendars, so that: 
exercises will not be held during the week 
The schedules of 
California, Leland Stanford Junior, Michigan 
in which January 1 falls. 
and Yale are already such that no exercises 
fall in this week. Pennsylvania and Princeton 
have arranged to permit all instructors who 
wish to attend the meetings held during con- 
vocation week to do so, and it is expected that 
they will alter their official calendars next year. 
The faculty of the University of Wisconsin has 
voted to lengthen the Christmas holidays so 
that convocation week will be left free till 
1905; this action will doubtless be confirmed 
by the regentsand made permanent. The only 
members of the Association of American Uni- 
versities, whose sessions begin during the week 
above mentioned and which has not yet taken 
It is to be 
hoped, may we not say expected, that all the 
action are Harvard and Chicago. 
institutions of the United States and Canada will 
give their support to this important movement. 
SCIENTIFIC NOTES AND NEWS. 
THE Hon. CHARLES D. WALcorT, director 
of the U. S. Geological Survey, gave an ad- 
dress before the University of Chicago on June 
17, his subject being ‘The Relations of the 
National Government to Higher Education and 
Research.’ We hope to publish this address 
next week. 
Dr. PAuL C. FREER, professor of general 
chemistry in the University of Michigan, has 
been granted leave of absence for one year to 
go to Manila on an important scientific commis- 
sion on behalf of the Philippine Commissioners. 
Dr. WILLIAM Z. RipLEy, of the Massa- 
chusetts Institute of Technology, has been in- 
vited to deliver the Second Huxley Memorial 
Lecture before the Anthropological Institute of 
Great Britain. The first lecture was given last 
year by Lord Avebury. 
