300 
ANNALS NEW YORK ACADEMY OR SCIENCES 
SECTION OF ASTRONOMY, PHYSICS AND CHEMISTRY. 
March 15, 1909. 
Section met at 8:15 p. m., Vice-President Hering presiding. 
The minutes of the last meeting of the Section were read and approved. 
The following programme was then offered: 
C. C. Trowbridge, New Laws of Gas Phosphorescence. 
William Campbell, Notes on the Structure of Hardened Steel. 
Summary of Papers. 
Dr. Trowbridge gave a detailed description of the apparatus he had 
designed for the measurement of gas phosphorescence and then showed 
the results obtained in the form of plotted curves. 
Professor Campbell first spoke of the work that had been done in trying 
to unravel the constitution of hardened steel; of the fight among the authori¬ 
ties as to the right of giving names to the constituents or structures observed. 
Then by means of lantern slides he showed typical photographs of hardened 
low carbon and high carbon steels, showing austenite, martensite, troostite, 
etc. and afterwards discussed the work of Benedicks on rate of quenching. 
The Section then adjourned. 
William Campbell, 
Secretary. 
SECTION OF ANTHROPOLOGY AND PSYCHOLOGY. 
March 22, 1909. 
Section met in conjunction with the American Ethnological Society at 
8:15 P. M., Vice-President Fishberg presiding. 
The minutes of the last meeting of the Section were read and approved. 
The following programme was then offered: 
F. Grendon, Anglo-Saxon Charms. 
Franz Boas, The Theory of Correlation. 
