NOTES. 



The water samples were taken by means of prof. Petteesson's water-bottle ami the titration has been made at the laboratory 

 of the Beriren Biological Station by Messrs. Thom.\s Mathiesen (samples of 1899) and R.\gnak Bakmax (samples of 1900) according- 

 to the methods of prof. Petteessox. I have made every temperature observation myself with a termometer of dr. H. Geissler Nachf. 

 Fez. Mi'llee in Bonn. 



The distances of the tables are expressed in nautical miles (= 1852 metres). 



