50 Thirty-fifth Annual Meeting ; 
pulled back by the hand. At its end it joins the rest of the 
margin by rather sharp angles which correspond to the points 
where the bow string is attached to the bow. The portion of the 

The scales are viewed as transparent objects and are magnifled about ten diameters. 
From a photograph by the writer. 
FIG. 1—Scales of Whitefish (Coregonus clupeiformis Mitchill) and Menominee whitefish (Coregonus quadrilateralis Richardson), both from Lake Huron. 
That of the whitefish is at the left. 

