Apparatus Hoo 4. 



Saiiie apparatiis as used in 1922. 



Experiment 4. 



You will see frora the tables that the different methods gave 

 very different results » Apparatus 1 and 4^ which vrere alike, gave 

 also the same results - and similar to preceding years. 



Apporatus 2 failed completely - v^rhile apparatus 3 in two fin- 

 ished experiments shov/ed itself superior, as this broug;ht forth a 

 little more than 35 per cent of the young to the bottom stage, e.g. 

 about five young lobsters per cubic decimeter cubic capacity. 



Accor^'ing to the experiments made, the apparatus 1 and 2 have 

 been changed as far as possible in accordance with apparatus 3 

 (model 1923)-. 



At this time I do not wish to );^;lve any detailed description of 

 apparatus and methods o With regard to the work,, we had some difficul- 

 ties in procui'ing adequate food for the youngj it was practically 

 impossible to obtain crabs, and at last they had to be ordered from 

 Lillesand, 



The lobster young was released in the follo^ving places: (see 

 table p, 176, at the bottom). (Total: 16,875 4thsj 4,255 3ds or 

 2dsO 



Dannevigj Alf 



1926a Fl^dcvigens utklaekningsanstalt. Aarsberetning vede 



Norges Fiskerier for 1925, he 1, pp. 129-133, illus. 



Fl/dcvigen hatchery 



R earing of lobster young 



During the season 1924-25 wo used the same apprrctus ivhich were 

 used last yorr for the rearing v/ork; two of these. No. 1 and 2, v;ere 

 however, partly changed according to the experiments made. 



54 



