THE BARENTS SEA 75 



trawler. It was the first experiment of this sort and a most fruitful one for the 

 practice of sea exploration. N. M. Knipovitch proved the practicability of 

 trawling in the Barents Sea. 



The third period 



The third period in the study of the fauna of the northern seas belongs to the 

 Soviet epoch. There was no sea in which the survey work was developed over 



Fig. 20. Professor К. M. Derjugin. 



so wide an area and to such a depth as that carried out in the Barents Sea in 

 the twenties and thirties. Almost at the same time (1919-21) there came into 

 existence three central institutes which carried out the exploration of this 

 region: the Northern Scientific-Industrial Expedition (later the AU-Union 

 Arctic Institute), the State Hydrological Institute, and the State Oceano- 

 graphic Institute, organized by I. Mesiacev (now the АН -Union Institute of 

 Sea Fisheries and Oceanography, vniro). A little later the Chief Director- 

 ate of the Northern Sea Route was created and its expeditionary activity 



