208 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



When the plaice hatches from the egg it is unable to 

 feed, and for about a fortnight it obtains its nutriment from 

 the food-yolk contained in the yolk-sac which is attached 

 to its belly. 



ust hatched 



Magnified 14 dia. 



After about a fortnight the young plaice begins to 

 feed. The yolk has then been used up. The food of the 

 little fish is at first diatoms and then copepods. Afterwards 

 it begins to feed on small shellfish — little cockles, &c, and 

 then as it becomes older it feeds on larger animals such as 

 '' hen-pens " (Mactra and Tellina). 



Tenth Day. 



The work of this day will be a general review of what 

 has been clone during the fortnight. 



