15 siirviving in the 4th stnge 21,1/? 



26 dead " " " " 36.6 



26 " dm-ing the fourth no It 36,6 

 4 in the 5th stage, vrell nnd g^ood- 5»6' 



Moreover, vre hr.ve tried the narmr.lian hormones in vie\7 of 

 observing their influence on the nioulting of the lobster lnr^."ae« 

 The ;?roducts used ere thyroxins r.ntuitrin and pituitrin* The 

 experiments i:iade on some tens of individuals seen to demonstrate 

 that these hormones are iirithout effect on the shedding of the 

 lobster larvae. 



TABLE I 



Average deviation between the temperr.ture of the sea v/ater and 

 that of the rearing tanks. 



Temperatur e of Sea YJater Te^.iperature of Tanks 



Week Mino 15axe Max. Dev« Min» Ilax» liilinx«Dev« 



TABLE II 

 If eekly Tenperatu re Elcyat ion of the Temperatiire 



".Teek Of the Tank Of the Sea Vfater 



TABLE III 

 Yield of lobster larvae fron_55 fe males 

 ITeek No. larvae ^ Percentage 



T/J 3LE IV 



Grouping of larva e used in rearing 



Groups in oval basins 



Noo Dates of collection of Duration of Jloa of larvae 

 larvae for rearing Collection 



Groups in "Boothbay Harbor" type tanks 



30 



