350 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



a measure of known capacity were taken from each day's 

 collection, and the number of eggs in each dip carefully 

 counted. The average of the ten countings was then 

 divided by the number of cubic centimetres in the measure 

 in order to obtain the average number of eggs per c.c. 

 This figure was then multiplied by the number of cubic 

 centimetres of water in the hatching box in order to 

 obtain the total number of eggs. 



" The larvae were taken to sea in a fishing-boat by 

 the assistant, and were liberated at various points either 

 on the east or on the west side of the southern end of the 

 Island, at distances of from 1 to 5 miles from land. 



" The numbers of larvae in this manner set free 

 during the season were as follows : — 

 March 



April 



May 



3 ... 



14,000 



11 ... 



72,000 



18 ... 



28,500 



20 ... 



28,500 



25 ... 



79,000 



30 ... 



285,000 



1 ... 



254,500 



8 ... 



661,000 



10 ... 



... 40,000 



11 ... 



224,000 



13 ... 



415,000 



15 ... 



s . 240,000 



18 ... 



... 296,000 



20 ... 



548,000 



25 ... 



392,000 



28 ... 



346,000 



29 ... 



325,000 



4 ... 



279,500 



5 ... 



106,500 



6 ... 



96,000 



10 ... 



241,500 



11 ... 



33,500 



14 ... 



92,000 



Total . 



„ ... ...5,097,500 



