Figure 16.-- Movements of 

 bottles released along 

 the transect, Charlevoix 

 to Manistique. June 6, 

 1932. 



Figure 17.--Movementsof 

 bottles released from 

 Manistique to Escanaba, 

 June 7, from Manistique 

 to Manistee, June 20, 

 and from Manistee to 

 Grand Haven, June 21, 

 1932. 



39 



