SeasMy Rainbow . 3m? . (fengm 0m/? . ' /faGa&k&a Mmmm 
r~~*' ' if " ” ~'i T r. . "l ' .* r——- — ■—r— ————. f r 1 -n 
Sept dug. dug. Sept dug. Oct June dug. Oct June dug. June Aug. 
/300 /90O . /900 1300 1300 /300 J900 J900 /300 190/ /900 /900 / 90/ /900 1901 /900 
564 Wisconsin Academy of Sciences, Arts, and Letters. 
^ ^ VO !>.. CQ 
1 
1 ? 
-r- 
<? 
Fig. 1.—Vertical distribution of Crustacea in Wisconsin Lakes. For explanation see text, p. 565. 
