^^>i>- ^ 



I^ic ^^l ^^ A i^ r^ln AUGUST 3 

 *^ ^ ^ \ ' ' I DRIFT BOTT 



BOTTLES 



"^^Z •^' 



SEPTEMBER 15 

 DRIFT BOTTLES 



"//' 



AUGUST 3 



DRIFT 

 ENVELOPES 



if • • • * 



• • • • 



• • 



SEPTEMBER 15 

 DRIFT 

 ENVELOPES 



5 10 

 I I I 



NUMBER OF DRIFT 



UNITS RECOVERED 



Figure 4. —Release stations, numbers recovered, and directions of recovery points 

 of drift units that were released in 1954 on the South Haven-Waukegan 

 transect. 



12 



