Figure 10. --Movements of bottles released along the transect, Frankfort to Two Rivers, 

 July 22, and near the nets off Two Rivers, July 23, 1931. 



northeastern Lake Michigan to south of Thomp- 

 son; one was found in St. Martins Bay, Lake 

 Huron. Only six bottles were recovered beyond 

 Pyramid Point and three were discovered 

 more than a year after release. One was 

 found in Lake Huron 3.7 years later and two 

 others in Lake Michigan after 1.9 and 5 years. 

 Only five bottles were collected southwest 

 and one northwest; they extended from 7 miles 

 north of Port Washington to 7 miles south of 

 Kewaunee. 



Frankfort to Kewaunee 



Only seven (75 percent) of the 28 bottles 

 dropped on July 30, 1931, were recovered 

 along the transect (fig. 11 and table 11), and 

 six of them (86 percent) had lost their drags. 

 These few bottles were discovered in 10-80 

 days, an average of 36.4, and at a distance of 

 13-98 miles, an average of 55.1. Two bottles 

 floated northeast, two northwest, and three 

 southwest. The most northerly recovery was 



23 



