toy Herbarium 
tttnwd Universitv 
Vol. 3. (new series) NOVEMBER, 1905. No. 4 
BULLETIN 
OF THE 
WISCONSIN 
NATURAL HISTORY 
SOCIETY 
COINTEINTS. 
Proceedings. 
Some Observations on the Life History and Habits of 
Parasitic Bees — Sigmund Graenicher. 
Canvas-back Duck Food by H. L. Skaveem, abstracted; 
Oecoeogicae Features of Evoeution — Ermine C. Case. - 
The Number of Young of the Red Bat — Henry L. Ward. 
Notes and Descriptions of North American Parasitic 
Hymenoptera— Chas. T. Brues. 
MILWAUKEE, WISCONSIN. 
THE EDW. KEOGH PRESS, MILWAUKEE 
