Bull. U. S, B. F. 191 2 



Fig. 59. — Section of fish tliyroiU tumor resembling the proliferating struma of Ivanghans as illustrated in plate 2, 

 figure 12. of his article. X160. 





2^ V w:-o/r»i««*«^. ,^'*K, 



Fig. 60. — Section of proliferating struma in man: original case of I^anghans to be compared with figure 58. X160. 



