Bull. U. S. B. F. 1912. 
Plate LXII 
Kk;. 17. — Wild brook trout from An Sable River: 8.2 cm. Ions: cross section showinii- distribution of normal tliyroid. X86. 
Fig. 18. — Algonquin wild brook trout: simple hyperplasia: high cuboidal epithelium reduction in some follicles and 
absence in others of colloid. Distinct hyperaemia about follicles: increa.sed amount of thyroid. X86. 
