Bull. V. S. B. F., 192S. (Doc. 1053.) 



Fig. 4,~Sc':ile iif Lake Hiiion herring (L. artedi) taken October 22, 1919, at Duck Isle (Lake Hiinm). Lenglli, 

 2.12 millimeter.'!- Female. Age VI C). Scale sliows a rotateil nucleus or central area 



Fig. 5.— Scale of Lake Huron herring (i. arlcdi) takeniNovember 1, 1922, at Bay City, Mich. 

 (Saginaw Bay). University of Michigan Museum No. .W829. Length, 262 millimeters. 

 Mature male. Age Vl. Scale shows near its focus a small scar, presumably a repaireii injury, 

 and at its margin a large clean-cut scar, presumably not a repaired injury, witli obscure 

 eirculi and well-defined typical annuli 



