BULL. U. S. B. F. 1912. 



PLATE LXXXIII. 



Kir;. 65. Section of fish tumor closely resembling the so-called struma nodosa, with "Wachstum centrum" of 

 Aschoff. X160. 





FIG. 66. Section of struma nodosa from a human thyroid gland ; to be compared with figure 64. X160. 



