272 



DISCOVERY REPORTS 



9' 



/o 



100-1 



75 



50 



25- 



D-l r 1 1 1 



SEPT&OCT NOV DEC JAN FEB MARscAPR 



Fig. 3. Seasonal variation in percentage infection at South Georgia during 



the 1928-9 season. Solid line Fin whales, pecked line Blue whales. 



/o 

 100- 



75- 



50 



25 



■"\ 



\ / 



\ / 



\ / 



\ / 

 \ / 



-¥- 



OCT NOV DEC JAN FEB MARsAPR 



Fig. 4. Seasonal variation in percentage infection at South Georgia during 

 the 1929-30 season. Solid hne Fin whales, pecked line Blue whales. 



