Bull. U. S. B. F. 1912. 
Plate LVII. 
Fig. 3. — Rainbow trout. Redrawn from Oilruth’s colored origrinal. 1902. Fargre tumor 011 each side of branchial 
junction. Gill fringre distended on surface of lower one. 
Fig. 4a. — Yearlingr hybrid salmon. Massive tumors and marked emaciation, hot 198Sa. 
Fig. 4b. — Two year old Sa/mo sfbago, extreme emaciation, hot 1950. 
Fig. 4. Saimo foutmalis 2 years old. First external evidence of tumor in base of muscular structure of isthnuis. 
showing: marked infiltrative tendency of grrowth. 
