HYDROGRAPHICAL SECTION — JULY 1905 ( 26 ) 
Under Head 1 of the Agenda (Prrrersson’s proposal to investigate 
numerous water-samples as exactly as possible with regard to 
Cl and SO, contents, Gazes (N,, O,, CO, and NH,), Alkalinity and 
Specific Gravity at %*) a committee is nominated after brief discussion to work 
out the question, consisting of Messrs. Petrursson, Knupsen, Krümmen and Nansen. 
The President communicated the information, that Committee A intended 
to undertake special investigations in the North Sea regarding the cod and herring 
and that it should like on those occasions to be in close touch with the hydrographi- 
cal researches. 
Dr. Hsorr said, that, once the necessary money was granted, he would carry out 
investigations regarding the herring and cod with the “Michael Sars” in the northern 
part of the North Sea. The region for these investigations would be from the Romsdals 
Bank to the Shetland Islands and from 60° N. Lat. to the north over suitable depths. 
It would be possible to modify this region somewhat in accordance with the views of 
the section. He hoped to be able to begin these investigations in February or March 
1906 and to continue them until the end of that year. England intended to carry out 
fisheries investigations continuously during three months in a region to the east of 
the English-Scottish coast and Germany in the German Bight. In connection there- 
with Sweden might undertake investigations at the same time concerning the migration 
of the herring in the Skager Rak and Kattegat. The biological work was the chief 
aim, but they were most willing to carry out observations at the same time which 
might promote the hydrographical science. To that end it was necessary, however, 
to modify the seasonal cruises in the Norwegian Sea and to have more definite 
problems formulated by the hydrographers; it seemed especially desirable to have 
a more profound knowledge of the currents or movement of the water-masses. 
Prof. Perrersson said he was glad to hear about the possibility of such 
joint work. 
Docent Knupsen was also of opinion that a successful cooperation might in 
such a way be arrived at, if, for example, the different countries divided the North 
Sea into parts and frequently made hydrographical observations each in his part. 
Denmark was also inclined to give up the seasonal cruises between Iceland and the 
Feroes and to concentrate the work. It should be the task of this section to work 
out an accurate plan for the hydrographical part of these investigations. 
Prof. D’Arcy THompson reminded them that Scotland had carried out monthly 
cruises in the northwestern part of the North Sea for nearly a whole year; he 
would consider it very desirable to have the Norwegian researches united with the 
Scottish ones. 
