MARINE BIOLOGICAL STATION AT PORT ERIN. 



35 









Larvae 







Eggs collected. 





Date. 



set free. 



Date 





109,250 .. 



. Feb. 



21 to March 1 



91,400 



... March 19 



518,700 .. 



. March 



l 3 to 10 



428,400 



. . . ,, 



29 



96,600 .. 



?) 



11 



71,400 



. . . ,, 



30 



231,000 .. 



?5 



13 



173,300 



... April 



1 



153,300 .. 



?? 



16 



387,450 



. . . ,, 



3 



378,000 .. 



5? 



17 



228,900 



. . . ,, 



6 



252,000 .. 



J? 



19 



484,050 



' * * 5? 



8 



672,000 .. 



?? 



20 and 22 



506,100 



. . . ,, 



9 



483,000 .. 



")"> 



23 and 24 



200,550 



. . . ,, 



12 



258,300 .. 



5? 



25 to 27 



567,000 



. . . ,, 



15 



688,800 .. 



» 



29 to April 5 



334,950 



,, 



23 



389,800 .. 



. April 



6 to 9 



296,100 



. . . ,, 



26 



346,500 .. 



?? 



10 and 12 



122,850 



... ,, 



29 



69,300 .. 



?? 



17 and 19 



43,050 



... May 



4 



38,850 .. 



?? 



21 and 23 



24,150 



. . . ,, 



8 



21,000 .. 



?? 



27 to May 6 



9,400 



,, 



14 



4,756,800 



4,010,000 





Lobster Culture. 



" Fifteen berried lobsters — the same number as last year — ■ 

 were purchased from the local fishermen. The yield of larvae 

 was, however, much greater this year than last, for while in 

 1919 the total number was only 9,702, or nearly 647 per 

 lobster, this year the total was 28,720, or a fraction over 

 1,914 per lobster. The inadequate number of rearing jars at 

 the disposal of the Assistant Curator rendered necessary the 

 liberation of a large proportion of the larvae in their first and 

 second stages, 27,600 being dealt with in this way. Eleven 

 hundred and twenty were placed in the rearing jars, and of 

 this number 278, or about 1 in 4, were successfully reared and 

 set free as lobsterlings. 



The Aquarium. 



" The Aquarium attracted 35,730 visitors during the 

 season, a number far larger than that of any previous year. 

 A new edition of the Guide to the Aquarium was first offered 



C* 



