25 
drawing's indicate the number of days from spawning. 
These with the foregoing remarks indicate the more import- 
ant results of the observations, but there is a wealth of 
material which we hope to have the time to return to for the 
purpose of a more detailed account. 
It will be interesting to state here also that the plaice 
and the flounders similarly shed their ova into the tank in 
which they were kept and in the case of the plaice these were 
fertilised, and while a similar periodicity was evidenced 
this was rendered to some extent obscure by the number of 
plaice which were spawning at the same time. The eggs of 
the flounder were not fertilised. 
Since the above was written, the two cod have died and 
w'ere found to l>e, as suspected, male and female. 
