My 
MARINE BIOLOGICAL STATION AT PORT ERIN. 13 
mally through the later larval stages, and became 
lobsterlings. Why other larve exposed to the same 
conditions, except that they were confined to the limits of 
the experimental tank, should have died remains unex- 
plained. Only six berried lobsters with nearly ripe eggs 
were brought in by local fishermen during the hatching 
These yielded a total of 5,300 larve, of which 
600 were the subjects of experiment in the rearing tank, 
season. 
while the remainder were set free in suitable sheltered 
spots, chiefly within the limits of Port Erin Bay. 
‘“The numbers of plaice eggs collected and of larve 
set free during the past season were as follows :— 
Eggs collected. Date. Larve set free. Date. 
69,800 ... February 19 to 28 48,800 March 21 
14°700m er. March 2 6,300 my et 
117,000 ... March 5 and 7 98,000 te 6 2G 
108,000 Pes te: 97,500 568 
400,000 , I2and 14 318,500 April 1 
362,300 ». 15 and 16 301,300 es Hy 
842,000 aL OTcOs L 677,000 - 8 
647,000 5» 22and 23 545,000 ane LL 
820,000 » 24 and 26 673,000 Ae a RS 
760,500 » 28 and 29 559,500 SLO 
813,700 : » 30 to April | 597,500 sige Ge 
413,000 ... April 2 297,000 ames ay 
549,500 “<4 4 and 5 407,000 Fomeker | 
1,220,500 “f 6 to 8 760,700 yee 
708,700 ee orandi 483,700 era y 
884,000 Powel? end 13 608,500 moO 
738,000 » 14 to 16 500,000 May 3 
1,191,700 0) 18-to.22 704,000 :; . 
158,600 ae 100,000 arith le 
678,000 aes 2otorau 327,000 cane LO 
84,000 May 9 5,000 wn 23 
11,581,000 8,115,300 
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Eat rae eee Ea a 
