very T/rrn in the rosejrvoir. To correct this, vre .sent the v^r.ter 

 directly into the r^ppart-.tus v/here the ptaup lends in. On c.ccount of 

 the strong suction in the pvimp, the iToter bubbled fo.st in the in- 

 take, alnost like c. seltzer (effervesced)— the result vjts thnt all 

 the simll nir bvibbles fastened themselves on to the youn^-^ lobsters. 

 They then floated up to the surface, and in the lapse of just n, fev/ 

 zninutes the younj:jsters died. So far it vias indeed a tragic outcone 

 but they got the idea for an automatic cleansing of the water. Not:, 

 also, they put effervescing vrater into the apparatus, but the air 

 bubbles are so small that they only take minute particles to the 

 surface, arid the lobster young are left in peace. All the impiorit- 

 ies and broken food gather on the surface and can be skinned off« 



The abox'-e procedure long dodged the difficulties. It showed 

 that crab \7as good food, immediately;- then crabs disappeared from 

 the shores of Skagerak. New experiments had to be tried,, and so 

 they found that beef liver was a workable substitute, so navr vre 

 have two means of supplying food for the young. Since they eat 

 every other hour it takes a lot to feed theia. 



The latest experiment has shovm that we can raise about every 

 third young lobster through the development of the larvae to the 

 bottom stage. In case the expenses are reasonable it must be con- 

 sidered to be a fully satisfactory method. In this experimental 

 apparatus we have managed to bring forth nearly 50,000 young to the 

 bottom stage in one season. 



In the present year there was built a new apparatus intended 

 to double (increase) production five tines. 



The great question now is v;hether one can shovr- the results 

 of releasing then into the water,-(v;h ether there's an increase in 

 lobster stock). It will be a comparatively long job for it takes 

 about five years for the young to shov/ up in the lobster nets, and 

 before that tine (until then) one has no survey over how numerous 

 the lobster young are in the sen. And it takes about seven years 

 before they are grovm and counted in the statistics. 



As the years go by there is brought forth a good deal of 

 investigation concerning the^ f\jll grovm lobster, with the distinct 

 aim to study its Y/anderings. This question has a great practical 

 purpose, namely, when it is necessary to establish a suitable 

 nini:raan measure. 



People are not like this at all: — that they are willing to 

 spare the snail lobsters which they think will drift away and next 

 year be caught in another district! These investigations, carried 

 cut, shovT, just like the earlier findings of Dr. -liinlm (?) and Pro- 

 fessor Appell^f, that the lobster is remarkably stationary, the 

 majority of then are fished up where they v/ere liberated in the 

 ocean. 



83 



