OcToBER 22, 1897. ] 
preserved either for purposes of reference or 
pending prosecutions. 
AMERICAN MATHEMATICAL SOCIETY. 
BEGINNING with the present academic year, 
the regular meeting of the American Mathe- 
matical Society will, as we have already noted, 
be held on the last Saturday of October, Febru- 
ary and April, instead of monthly from October 
to May as heretofore. The annual meeting for 
the election of officers takes place in the last 
week in December, falling this year on Wednes- 
day, December 29th. Each meeting will now ex- 
tend through two sessions, beginning at 10:30 
a.m. and 2.30 p.m. As a result of the ar- 
rangement, it is believed that the individual 
meetings will become of greater prominence 
and interest, and that the members of the So- 
ciety will be afforded a better opportunity for 
mutual acquaintance and scientific discussion. 
The first meeting of the Society under the new 
program will be held on Saturday, October 
30th, in Room 301 of the Physics Building of 
Columbia University, New York City. The 
following is a list of the papers thus far entered 
for presentation : 
MORNING SESSION. 
1. Dr. G. W. Hitt: ‘Intermediary orbits in the 
lunar theory.’ 
2. Mr. P. R. HEyL: ‘Notes on the theory of light 
on the hypothesis of a fourth dimension.’ 
3. Dr. E. O. Lovurr: ‘Note on the fundamental 
theorems of Lie’s transformation groups.’ 
4. Professor CHARLOTTE ANGAS SCOTT: 
5. Professor E. W. Brown: ‘ Note on the steering 
of an eight-oared boat.’ 
AFTERNOON SESSION. 
6. Professor R. 8S. Woopwarp: ‘On the cubic 
equation defining the Laplacian envelope of the 
earth’s atmosphere.’ 
i == ‘On the integration of a system of 
simultaneous linear differential equations.’ 
8. Professor MANSFIELD MERRIMAN: ‘The proba- 
bility of hit on a target when the probable error in 
aim is known; with a comparison of the probabilities 
of hit by the methods of independent and parallel 
fire from mortar batteries.’ 
9. Professor A. S. CHESSIN: ‘ Note on hyperelliptic 
integrals.’ 
DurRinG the past year a section of the Society 
has been organized with headquarters at Chi- 
SCIENCE. 
627 
cago. The meetings of the section, like the 
summer meeting of the Society, usually ex- 
tend through two days, and are held in the 
Christmas holidays and in April. 
THE October number of the Bulletin (Vol. 7, 
No. 1) has just been issued, and contains, beside 
the usual ‘Notes’ and ‘List of New Publi- 
cations,’ the report by the Secretary of the 
Summer Meeting at Toronto, articles on ‘ Reg- 
ular Triple System,’ by Professor E. H. 
Moore; on ‘Collimations in a Plain with In- 
variant Quadric or Cubie Curves,’ by Professor 
H. S. White; on ‘A generating Function for 
the Number of Permutations with an Assigned 
Number of Sequences,’ by Professor Frank 
Morley ; and a review of Koenig’s ‘La geome- 
trie réglée et ses applications,’ by Dr. Virgil 
Snyder. 
GENERAL, 
Tue fifteenth annual Congress of the Ameri- 
can Ornothologists’ Union will meet at the 
American Museum of Natural History, New 
York, on the evening of November 8th, and 
will continue in session on the three following 
days. 
THE directors of the Philadelphia museums 
propose holding in October of next year an ex- 
position of the raw and manufactured products 
of the United States. It will be in conjunction 
with the next meeting of the advisory board of 
the museum, which will be attended by many 
foreign delegates. 
MeEmMoRIAL exercises in honor of the late 
General Francis A. Walker were held by the 
Massachusetts Institute of Technology, in 
Boston, on October 14th. There were more 
than 3,000 people present in Music Hall, includ- 
ing many delegates from educational and scien- 
tific institutions. Addresses were made by 
Governor Walcott and Senator Hoar. 
Proressor J. M. SCHAEBERLE has been ap- 
pointed acting director of Lick Observatory in 
the place of director Edward S. Holden, whose 
resignation is noted elsewhere in this issue. It 
is said that either Professor Schaeberle or Pro- 
fessor Dayidson will probably succeed Professor 
Holden in the directorship. 
Lord KELVIN sailed for England on Saturday, 
after a week filled with engagements, including 
