180 



The following table shows how all the fish of the experiment were distributed in 

 each quadrant : — 



Distances travelled — 10 miles and under. — Fifty-two of the fish, or 26'8 per 

 cent., went distances not exceeding 10 niles, namely, 20 males (22-5 per cent.), with 

 an average of 7'.3 miles, and 32 females (30'5 per cent.), with an average of 7*8 miles. 



10 to 20 miles. — Forty-two of the fish, or 2r6 per cent., were found at distances 

 between 10 and 20 miles, namely, 21 males (23'6 per cent.) wdth an average of 14'3 

 miles, and twenty-one females (20 per cent.), with a mean of 14 miles. 



Thus, 94 fish, or 48'4 per cent., were recovered within 20 miles of the 

 place of liberation, namely, 41 males (46"1 per cent.), with an average distance of 

 11 miles, and 53 females (50'5 per cent.), with a mean of 10"2 miles. 



20 to 50 miles. — Sixty-eight fish, or 35 per cent., migrated distances of from 



