658 BULLETIN OF THE BUREAU OF FISHERIES. 
In Lake Erie the whitefish area is divided into two portions—a western, which 
occupies the central portion of the lake west of Conneaut and is not interrupted 
by deeper middle water, and an eastern, which lies eastward of Conneaut and 
contains a small central middle portion of deeper water. The two portions are 
connected by a narrow neck at their southern borders. So far as I can learn 
the whitefish appear to confine themselves during most of the year to the eastern 
portion of this area, though for what reason is unknown. 
racaan, PS “ 
< ey 
SS 
SY 
PORT HURON 
Fic. 3 LAKE HURON. 
Whitefish area (shown in black), 10 to 35 fathoms. (Reduced from U. 5S. Hy drographic Office chart no. 1478. Scale: 
1 in.= about 46.8 miles.) 
More careful examination of the maps shows that while the whitefish 
area is continuous in most of the lakes about the whole border, this is not the 
case in Lake Michigan. Just south of Little Point Au Sable the area is nearly 
interrupted, and to the north of this it breaks up into numerous small areas which 
are either detached from one another or nearly so. Of course if the deeper 
