104 
Saturday, April 6th. The summer meet- 
ing of the Society will be held at Cornell 
University, beginning on Monday, August 
19th. Arrangements are being made for a 
colloquium in connection with the summer 
meeting. The committee in charge is now 
able to announce that Professor EH. W. 
Brown will give a course of six lectures on 
‘The modern methods of dealing with the 
problems of dynamics and especially those 
of celestial mechanics,’ consisting mainly 
of the work of Poincaré in this direction. 
A second course of lectures will also be ar- 
Tema F. N. Corx, 
Secretary. 
THE AMERICAN CHEMICAL SOCIETY. 
Tue first session of the twenty-second 
general meeting of the American Chemical 
Society was held in Lewis Institute, Chi- 
eago, Ill., on Thursday, December 27, 1900. 
The session was called to order by Presi- 
dent MeMurtrie, in the chemical lecture- 
room of the Institute at 10.15 a.m. Dr. 
W. RB. Smith, chairman of the Chicago sec- 
tion of the Society, was introduced and wel- 
comed the chemists on behalf of the local 
section. He was followed by Howard S. 
Taylor, Esq., prosecuting attorney for the 
city of Chicago, who addressed a few 
words of welcome on behalf of the city and 
its citizens. President McMurtrie re- 
sponded briefly on behalf of the Society, 
thanking the speakers for the cordial words 
of welcome. 
After a few announcements a paper on 
‘Correction in the Determination of Urea 
by the Liebig Method,’ was read by J. H. 
Long. This was followed by another paper 
by the same author, on ‘Preliminary Note 
on the Optical Rotation of Certain Tar- 
trates in Glycerol.’ The latter paper was 
discussed by Messrs. W. A. Noyes and 
Long. A paper on ‘The Decomposition of 
Sodium Nitrate by Sulphuric Acid, Part 
SCIENCE. 
(N.S. Von. XIII. No. 316. 
Two,’ by C. W. Volney, was read by the 
author. Edward Gudeman presented a 
brief paper on arsenical poisoning, which 
was discussed by Messrs. Springer, Volney 
and Gudeman, and Miss Fossler. Two 
papers by C. L. Parsons, entitled ‘ A Simple 
Test for distinguishing Oleomargarine from 
Butter,’ and ‘ The Use of Metallic Sodium 
in Blow-pipe Analysis,’ were read by the 
Secretary in the absence of the author. 
A photograph of the assembled chemists 
was taken, and, after a few announcements, 
the morning session was adjourned At the 
close of the session luncheon was served in 
the building, through the courtesy of the 
authorities of the Lewis Institute. 
The Council of the Society met at the 
Lewis Institute at 1.30 p.m. Other mem- 
bers of the Society participated in visits to 
the works of Messrs. Frazer & Chalmers, 
the Consumers Ice Company, and the 
Hisendraht tannery of the American Hide 
and Leather Company. 
The evening session of the Society was — 
held in the banquet hall of the Auditorium 
Hotel. Dr. W. R. Smith, vice-president of 
the Society and chairman of the Chicago 
section, presided. ‘The retiring president, 
Dr. William MeMurtrie, delivered an ad- 
dress on ‘The Condition, Prospects and 
Future Educational Requirements of the 
Chemical Industries.’ After a few an- 
nouncements the session adjourned, and the 
visiting chemists enjoyed a ‘smoker’ given 
by the members of the local section at the 
Technical Club, 230 South Clark street. 
The session of the meeting on Friday 
was held in the chemical lecture room of 
the Northwestern University Medical and 
Pharmacy School, 2421 Dearborn Street. 
The meeting was called to order by Presi- 
dent McMurtrie at 9.30 a.m. 
The annual reports of the Secretary, the 
Treasurer and the Librarian were presented 
in order and read by the Secretary. These 
reports were accepted by the Society and 
