Bui.i-. U. S. H. i'., I'.f-'S. (One. 105:5.) 



Fig. 17.— Scale of Lake Huron herring (L, nrhdi) taken November 1. 1922. at Bay City. Mich. 

 (Saginaw Bav). University of Michigun Museum No. ,58597. Length. 213 millimeters. Weight, 

 4 ounces. Immature male. Age II. Scale stiows one completed annulus and a large marginal 

 growth 



Fir,. 18. — Scale of L;ike Hurnn herring (/>. arfnli) taken Decenilier li. iyil>, at Wiarton. Ontario (Oeorgian 

 Bay). LTniversity of Michigan Museum No, .'vitt-^s. Length, IT.'i millimeters. Immature. Age II. 

 Scale shows one completed annulus and a large marginal growth 



