1412 Wisconsin Academy of Sciences, Arts, and Letters. 
The new exchanges are as follows: 
Statens Skogs-Forsoksanstalt, Stockholm. 
Revue Scientifique du Bourbonnais. 
Coiner Akademie fur Praktische Medizin. 
Kaiserliche Biologische Anstalt fur Land- und Forstwirthschaft. 
Musee Zoologique, Imperiale des Sciences, St. Petersburg. 
Probably the most important part of the Committee’s work during 
the past year has been its activity as an advisory board during the pro¬ 
cess of cataloguing the Academy library by the staff of the University 
Library. This work has raised many perplexing questions, most of 
which we hope to have solved in satisfactory manner. The cataloguing 
is progressing rapidly, and we hope to see it completed during the en¬ 
suing year. 
As heretofore we recommend that this Committee be continued for 
another year, and that it be allowed for use in its work such amounts 
from the Academy’s funds as may to the Executive Committee seem 
wise; and that it be further allowed to use such sums as may be real¬ 
ized from the sale of duplicate material. 
Respectfully submitted, 
George Wagner, 
Walter M. Smith, 
Edward Kremers. 
FORTY-SECOND ANNUAL MEETING. 
The meeting was held jointly with the Wisconsin Archeologi¬ 
cal Society, the Wisconsin Mycological Society, and the Wiscon¬ 
sin Natural History Society, in Madison, on April 4 and 5, 1912. 
The morning sessions were held in the Lecture Room of the 
State Historical Library, and the afternoon sessions in Room 42, 
Science Hall. The following progamme was presented: 
Thursday, April 4. 
Morning Session, 10:00 o’clock. 
D. C. Munro presided, as President Plantz was delayed: 
Preliminary Business. 
Presentation of Papers. 
1. Efforts to Prevent the Introduction and Dissemination of Inju¬ 
rious Insects. J. G. Sanders. (By title.) 
2. The Oscillations of the Lower Water in Green Lake. E. A. 
Birge. Twenty minutes. 
3. Notes on Lake Michigan Swarms of Chironomids. A. C. BurrilL 
Ten minutes. 
