Hii.i.. r. S. H. !•'., I'.CJS. (l)(if. lOf);!.) 



Fiii. 6.— Scale of Liike Huron herring (i. artcdi) taken Novemlier 1. ia'22, at Bay City, Mich. 

 (Saginaw Bay). University of .Alichigan Museum No. 585.''i7. Length, 230 millimeters. 

 Weight, .').2o ounces. Mature male. Age V (determinefi from other scales). Scale 

 shows accessory annuli in the second, third, and probably in the fifth summer's growth 

 zone. 



Fi(^ 7.— Scale of Lake Huron herring (L. artcdi) taken October 27, 1921, at Bay City. Mich. (Saginaw 

 Bay). University of Michigan Museum No. .';4329. Length, 219 millimeters. Male. .\ge IH. 

 Scale shows a wide double annulus in the second year 



