Bull. U. S. B. F. 1912 



Plate XCV. 







.V'^4. 



Fig. 91. — Section of thyroid showing spontaiu-ou^ rtxuvcr\ from carcinoma of the thvroid. Karly stage. Wild 

 Wisconsin brook trout. Fish No. 3099 A. X86. 



Fig. 92. — Section showing spontaneous recovery from experimentally induced carcinoma of the thvroid in wild 

 Wisconsin brook trovit. Fish No. 2099 B. X86. 



