already spoiled if we except the sincll part t/hich had been hatched. 

 The last half of the sees on we got some younj^ from three spa\'m 

 lobsters, which had been bought in liaugesunda 



The pause of the poor results is probably the large nimber of 

 parasitic vroriiis (HistrinMella) v/hich were also mentioned in the 

 preceding report. This parasite is not to be found in Anerica; it 

 is very probable that the good results obtained over there are due 

 to the fact that they do not have to fight this parasite. Every 

 single lobster Virhich we got in Korshavn, vras infested with thou- 

 sands of these snail v/orms, riiich did not Unit their activity to 

 the eggs and the egg bearing lobsters; they vrere also observed on 

 the young where they vrere creeping around on the gills j, the legs 

 and everyivhere. We do not know in what way they harn the eggs and 

 the young, but we suppose we night blane this vrom at least for 

 part of the difference when we compare the results of the experi- 

 ments made on this side of the Atlantic with those obtained in 

 America. The Sv/edish experiments in Bohuslen in 1913 did not 

 give any good results either; according to the papers the result 

 v/as 5,000 brood in the 4th stage. At Hvidings/y only sma.ll quan- 

 tities of brood were reared; here the result was about 1,600 in 

 the 4th stage t At ilvidings_«{ the supply of neY;-ly hatched brood 

 vras unlimited; here we had Bjelland's entire stock of lobster 

 (about 20,000, i.e. at least 1^500 spawn lobsters) at our disposal. 



In comparing our results vrith those obtained at the very well- 

 kno"»vn rearing station, vihich is na.naged by Dr. Mead, Rhode Island, 

 U0S.A.5 Y/e have to take into consideration thrt good results were 

 obtained over there only after i.iany years' experiments. Especi- 

 ally ViTo emphasize that the above mentioned parasitic vrorm which 

 ruins all our experim.ents, is not to be found in American waters. 



Tfe have to grant that the problem of rearing of lobster brood 

 is still in its experimental stage in Evirope. 



Below is a short survey of the rearing experiments made in 

 1914: 



E:cper ime nt 1 . 



July 8: In 400 brood 

 10: In 1800 " 

 11: In 1010 " 

 10: In 500 " (?) 



14: Of 12 individuals, 11 had reached stage 2. 

 18; Almost all had reached stage 3. 

 20: First young lobster in 4th stage observed 

 21: Four more in t?ie bottom stage observed 

 27: Five young lobsters in the bottom stage were 

 taken up; up to this time there were in 

 all, 10. 

 Nov/ no nore young vrere left; the rest had either died or dis- 

 appeared. The reason whj' such small quantities of larvae vrere put 

 in (and even in the course of foui' days), vms that the supply of 



166 



