FIN BOOM ON THE KENNEBEC NEAR BINGHAM, MAINE. 
The comparatively recent introduction of the fin boom has quite revolu- 
tionized log driving on some rivers. The picture illustrates how the set 
of the current against the fins forces the boom far to the right, almost to 
the opposite bank of the river. Thus the boom guides the floating logs to 
the right, past the head of the island just visible in the middle distance 
and down the right hand channel of the river. 
Photo by Maine Forestry Dept. 
