PROCEEDINGS OF THE ACADEMY, 
1919 AND 1920 
FORTY-NINTH ANNUAL MEETING, 1919 
The forty-ninth annual meeting of the Wisconsin Academy 
of Sciences, Arts, and Letters, in joint session with the Wiscon¬ 
sin Archeological Society, was held at Milwaukee, in the Trus¬ 
tees’ Room of the Milwaukee Public Museum, on Thursday and 
Friday, March 27 and 28, 1919. 
In the absence of the Secretary and Treasurer overseas, Mr. 
R. H. Whitbeck assumed the duties of Secretary, and Mrs. Ar¬ 
thur Beatty had charge of the finances. There was no business, 
with the exception of that of a routine nature, the most im¬ 
portant of which was the reports of the Secretary and Treas¬ 
urer, copies of which are appended to these minutes. President 
Birge made announcement of the forthcoming Fiftieth Anni¬ 
versary of the Academy in 1920, and stated that steps were being 
taken to observe the occasion in a fitting manner. 
Under the direction of the President the following programme 
of papers w^as presented: 
First Session, Thursday, March 27, 10:00 A. M. 
Introductory Remarks. President E. A. Birge. 
General Business. 
Presentation of Papers: 
1. Psychological Tests of Aptitude for Flying. V. A. C. Henmon. 
2. Milton’s Character as Reflected in His History of Britain. Harry 
Glicksman. 
3. The Problem of Controlling Atmospheric Temperature and Hu¬ 
midity for Plant Growth. W. E. Tottingham. 
4. The Construction of a Sensitive Eight Coil Galvanometer. L. R. 
Ingersoll. 
5. The Construction of Power Vacuum Tubes and their use in Radio 
Telephony. E. M. Terry. 
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