.28 0. Nordgaard. [No. 2 



Notes about the plankton. 



The marks have the following signification : 

 rr = very scarce, 

 r = scarce, 

 + = somewhat numerous, 

 c = common, 



cc = very common, 

 t — temperature of the sur face, 

 s == salinity of the surface. 



St. 1. 27 / 5 1897. 14 miles NW of S. Fuglø (15 miles NW of S. 

 Fuglø, t = 6°,5 C, S = 34,97 %o). 



Calanus finmarchicus occurs in such great numbers, 

 that the species is quite preponderating in the plankton. 

 „ 2. 28 / 5 1897. 16 miles NW" of S. Fuglø, t == 6,6, s = 34,97. 

 Calanus finmarchicus cc. 

 Oithona similis +. 

 „ 3. 28 / 5 1897. 18 miles NW of S. Fuglø, t = 6,8, s = 35,16. 

 C. finmarchicus cc. 

 Oithona similis -j— 

 The plankton in 1, 2, 3 is of the same character. . 

 „ 4. 6 / 6 1897. 75 miles NW t. W of S. Fuglø, t = 0,9, s = 34,52. 

 The diatoms preponderating. 1 ) 

 C. finmarchicus jun. +. 

 0. similis c. 

 Calanus-l&rvæ c. 

 Oncæa conifera r. 

 „ 5. 13 / 6 1897. 26 miles NNE of Jan Mayn. 

 The diatoms preponderating. 

 Calanus-l&rvæ r. 

 0. similis r. 



2 ) As to species, see Jørgensen (3, p. 32). 



