Trans. Wis. Acad., Vol. XI. Plate Xl. 
3o.w Tito. N\cu. Kft*. NViy 3 urn 3u,Vv^ _ Aug. Sqft. _ Out, Ko\). Ysn, 
JJ^ml^^-rTrOrOc^ c-i 
Annual Distribution of Daphnia Kahlbergiensis. 
