Bull. U. S. B. F. 1912. 



Plate LXXXIII. 



Fk;. 65. — Section of fish tutnor closelv 

 Asclioff. X16U. 



resembling the so-called struma nodosa, with "\Vachstum centrum" of 



Fk;. 66. — Section of struma nodosa from a human th\roid gland ; to be compared with figure 64. Xlhu. 



