SEA-FISHERIES LABORATORY 



243 





Nets 





Total. 



Average per net 



Sept, 2 



6 



= 



2,235 



372 



3 



11 



= 



16,611 



1,510 



4 



.. 19 



= 



6,305 



332 



5 



1 



= 



50 



50 



6 



.. 26 



= 



11,356 



436 



9 



3 



= 



10,900 



3,633 



10 



7 



= 



2,950 



421 



11 



.. 24 



= 



19,876 



828 



12 



.. 19 



= 



195,835 



10,307 



13 



3 



= 



2,750 



917 



14 



1 



= 



1,700 



1,700 



16 



8 



= 



4,635 



579 



17 



14 



= 



22,491 



1,606 



18 



15 



= 



4,427 



295 



19 



9 



= 



6,820 



758 



20 



.. 36 



= 



44,502 



1,236 



21 



1 



= 



1,000 



1,000 



23 



1 



= 



750 



750 



24 



1 



= 



1,750 



1,750 



26 



1 



= 



1,000 



1,000 



27 



1 



= 



2,250 



2,250 



28 



1 



= 



1,500 



1,500 



30 



1 



= 



1,500 



1,500 



Oct. 1) 











9 

 14 



4 



= 











24 J 











Nov. 4 



1 



= 



225 



225 



8 



1 



= 



200 



200 



16 



1 



== 



600 



600 



25 



1 



= 



1,125 



1,125 



Dec. 12 



1 



= 



470 



470 



20 



1 



= 



650 



650 



23 



1 



= 



300 



300 



30 



1 



= 



600 



600 



From the above list of the Dinoflagellate catches, 

 and the accompanying curve (compiled from a total of 

 595 hauls), it is seen that the numbers rise from a very 

 low point at the beginning of the year to a series of peaks 

 in April, the highest of which is 5,704 per haul on the 

 9th, and in July a higher point (8,000) is reached, after 

 which the numbers fall and keep generally at a lower 

 level until the middle of September, when for a single 

 day a very high average is attained, 10,307, the highest 

 in the year. After this there is a very rapid fall, the 



