KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 57. NIO 7. 



39 



Table 61. S. Skag. 9. 58° 21' N., 8° 56' E. 26. II. 1914. 





äO 



o 

 o 



o 



'q 



CS 



00 



— CO 



Cfl tH 



S 



a 



K 



cä en 



o 



q 



43 



p. 

 s 



p 



O, 

 q © 



4, 3 



H 43 



>> 



'c 



t» 



"in 



q 



(0 



Q 



T3 

 O 



q 



£ 

 >> 



o 



49 

 CO 

 b. 

 0) 



O 



q ~ -o 

 3 c 



f 



GQ 



o S«J 

 - +» o q 



M an q 



•2.» § 



— '-5 aj 



s 



(1 



2,33 



29,18 



23,32 



180 





720 



60 



3,680 



3,840 





20 



4,35 



32,88 



26,10 





40 



40 





10 



31) 





40 



4,61 



33,17 



26,29 



60 





16(1 





40 



160 



20 



60 



5,63 



33,98 



26,82 



30 



30 



170 





10 



40 



20 



100 



6,06 



34,51 



27,18 



20 



21) 



160 







6o 





200 



7,07 



34,99 



27,42 







120 







15 





so far, as the Baltic Current-water of less than 31 u / 00 salinity did extend. Now the total 

 absence of such a dilute snrface-layer at S. Skag. 8 and its exceedingly thin development 

 at S. Skag. 9 account for my very different results, as the deeper, Atlantic layers are in- 

 variably almost empty in winter. 



Table 62. Organisms per l in February 25th — 26th 1914. 



S. Extra 11 S. Skag. 



s. 



Skag 



. 5 



s. 



Skag. 



S. Skag 



.8 



s 



Skag. 9 



a, 

 di 

 Q 



00 



43 



q 

 a 



s 



"3 

 S 



q 

 < 



Organisms 



total 

 numbers 



Plants 



Animals 



Organisms 



total 

 numbers 



m 



43 



q 



03 



5 



oo 



3 



a 



< 



Organisms 



total 

 numbers 



DQ 

 43 



q 

 cs 



s 



Animals 



Organisms 



total 



numbers 



00 



s 

 ca 



CO 



"5 



2 

 q 

 < 



Organisms 



total 

 numbers 



00 



43 



q 

 ti 



5 



CO 



"cö 



s 



■33 



Organisms 



total 

 numbers 







209,640 



6,300 ' 215,940 72.650J 6,350 



79,000 



14,490, 880 i 15,370 



8,100 



240 8,400 



880 



20 



900 



9,600 



3,880 



13,480 



10 



242,820 



800 243,620 



116,800 



4,700 



121,500 



10,680 



260 



10,940 



















20 



132,500 



1,000 133,500 



92,400 



1,100 



93,500 



5,860 



260 



6,120 



2,420 



260 2,680 



560 



60 



620 



370 



40 



41*) 



30 



227,400 



3,600 231,000 



251,500 



2,100 253,500 



7,290 



280 



7,570 



















40 









218,300 



5,000 | 223,300 



7,580 



200 



7,780 



7,090 



80 7,170 



20 



ioo 



120 



1,130 



180 



1,310 



50 









65,500 



7,700 73,200 

























60 





4,440 



800 ! 5,160 









2,100 



100 2,200 



120 60 



180 



1,840 



70 



1,910 



80 









5,310 



1,160 



6,470 























100 





















270 



100 370 



70 



20 



90 



2,430 



70 



2,500| 



200 























I 



o 











2,580 



25 



2,605; 



To sum up the general features of the seeond February-series from the Skager Rak, 

 investigated quantitatively, we may quote this. 



There is a very great dif ference both as to the nature of the marine microvegetation 

 and as to its degree of frequency between the outer, south-western parts of the boundary 

 with a salinity, not falling below 33 n /oo> an( l tlie inner, especially the south-eastern parts, 

 where the water is now considerably diluted — to less than 30 %o salinity — by the Baltic 

 Current down to a depth of about 30 m. This fresher water of c. + 2°,s is still rich in 

 various discs, belonging to the genera Thalassiosira and Lauderia. Of regular occurrence, 

 often in the sporiferons stage, is a small Thalassiosira, forming short chains of approxi- 



