15 
Hartlepool. Two had migrated in a southerly direction in 
the district, viz., one from Alnmouth Bay to Cresswell, and 
the other from Hlyth to Tynemouth. It will he seen from 
the chart that with one exception the flounders were recap- 
tured at no great distance from the shore, and if the 
particulars in previous reports be consulted examples will l^e 
found of recapture in estuarine waters. 
V Reports, 1905, p. 57 ; 1906, p. 25; 1907, p. 21 ; 1908, p. 31. 
Turhot . — Table 4, C'liart 4. — 'I'he total number liberated 
was 85, viz., 1 in 1908, 4 in 1904, df) in 1905, 18 in 1900, 22 
in 1907, 2 in 1908, and 2 in 1909. The recaptures number 0, 
or 7 per cent., and the amount of migration and its direction, 
in all cases into deey) water, is best appreciated by 
examining (’hart 4. In two eases the period between 
libei-ation and rec-a])ture was more than two years, ami in a 
third more than li years. 
V Reports, 1905, p. 57 ; 1906, p. 24; 1908, p. 31 ; 1909, p. 17. 
(h) CRABS AND LOBSTERS. 
C rahs. 1’ables 0 7, C'liart 5. From the tables it will 
be seen that 781 were marked and liberated at various places 
along the coast of Xorthumberland in the years 1902 to 1905, 
and that 79 or 10 per cent, were recaptured. The tables are 
arrang<'d to show the same facts as those used for flatfish, 
but size is not included, and in its place columns are provided 
to indicate the direction of migration. Previous reports give 
the nei'essary information as to the method of marking and 
the nature of the crabs employed which were in the process of 
hardening after casting. I'he results in this case at all 
events are perfectly consistent. The females which were at 
liberty for more than six months all migrated in a northerly 
direction along the coast, reaching in most cases the adjacent 
shores of Scotland, and some of them were captured on the 
coasts of I'orfarshire and Kincardineshire. The males on 
the other hand so far as our records go did not show any 
tendency to migrate. Four males were free for more than 
two years and were captured in the neighbourhood of the 
place of liberation. In only one case has the migration been 
