COUNCIL — SEPT. 1910 — APPEND. G — 92 — 



International Council (where the depth is more than 40 metres, so that a distinct 

 division into layers with regard to salinity and temperature may be present). The 

 investigations are proposed to be undertaken in the summer, in consideration of 

 the weather. 



Among the investigations proposed may be named: 



Hydrography: 



1) Measuring of currents, temperature and salinity at (6) different depths (8) 

 times in the twenty four hours. 



2) Oxygen-analysis at the same depths and hours as the collecting of plankton. 



3) Determinations of N^, CO^ and Alkalinity. 



4) Liberation of (5) current-bottles and (5) bottonitrailers each day. 



5) Determination of the colour and transparency of the water. 



Plankton investigations: 



6) Quantitative samples with special reference to the study of fish-eggs and 

 fish-larvae. 



7) Vertical quantitative samples with flne-meshed (Apstein's) and coarse-meshed 

 . (Nansen's) nets by day and night (once at noon, once at midnight). 



8) Samples at the same time as the herring-fishery at the places and in the 

 water-layers where the herrings are found. 



9) Frequent samples for studying the life-cycle of some important plankton- 

 organisms, studies which are as far as possible to be made onboard, on the 

 living material. 



Fishery: 



10) Fishing with herring drift-nets, as far as possible kept out during the whole 

 time. 



11) Fishing with long-lines once in the twenty four hours. 



Assuming that one of the investigation-ships with motor- or steam-boat can 

 be placed at the disposal of the undertaking and that the necessary communication 

 with the land can be maintained by inspection-ships or the like, and assuming 

 that the analysis and the other working up of the material collected can be done 

 gratis in the various laboratories, the cost may be estimated as follows: 



