Bull. U. S. B. V.. 192s. (Doe. 1053. 



Fio. 35.— Scale of Lake Huron herring (L. arlcdi) taken Dtlnher 22, l'.il7. at East Tavvas, Mich. 

 University of Micliigan .Museum No. 52272. Length, 377 niillinieters. Weight, 2 pounds. Age X. 

 Scale shows nine completed aiuuili and a small marginal growth 



Fig. 3(5.— Scale of Lake Ontario herring (i. artedi) taken June IS, Wil, at Brighton, Uutario. Length, 

 412 millimeters. Age XI. Scale shows 10 completed annuli and a marginal growth 



