Page 



16. Release stations, numbers recovered, and directions of recovery points of sand-ballasted 



bottles released June 5 and July 14, 1955, on the Charlevoix -Manistique transect .... 30 



17. Release stations, numbers recovered, and directions of recovery points of drift bottles 



with drags released September 5 and October 19, 1956, on the Charlevoix -Manistique 

 transect 31 



18. Release stations, numbers recovered, and directions of recovery points of sand -ballasted 



bottles released September 5 and October 19, 1955, on the Charlevoix -Manistique 



transect 32 



vii 



