FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



NAUBINWAY 



Scale of Miles 



TRAVERSE CITY 



Figure 1. — Northern Lake Michigan showing points of release and capture of marked hike trout. Phmting kjcations 

 designated as follows: 1944, square enclosing an X; 1945, circle enclosing a +; 1946, triangle enclosing dot. Re- 

 coveries from the three plantings are indicated as follows: 1944, squares; 1945, circles; 1946, triangles. The sizes 

 of the symbols indicate numbers of fish recaptured at the various points, the smallest symbol of each year class is 

 for 1-4 fish thro\igh the largest for more than 49 fish. 



part of area 7 and tlie vicinity of South Haven 

 (area 8), more tlian 60 miles distant, where 102 

 lake trout with deformed or missing; fins were 

 taken. 



Lake trout witli ahnormal fins, captured on 

 the Wisconsin side of tlie lake, are not shown on 

 the map. Most of tlie 142 fish taken were caught 

 north of Algoma; a few, 1 or 2 off each port, were 

 taken off Two Rivers, Cedar Grove, Milwaukee, 



and Racine. The records on tliese fisii are not 

 sufficiently detailed for profitable study. 



Rather than iTJect individual fish arl)itrarily 

 all samjjles, pioporly documented and iiaving 

 "possible" fin markings, were accepted for study. 

 The large size of certain lake trout whose missing 

 fins in<iicated ages of 1 or 2 years made it certain 

 they were not from the plantings, but size alone 

 cannot l)e used as a genei-al criterion for tiie sepa- 



