28 KJELLMAN, THE ALG OF THE ARCTIC SBA. 
5—15 fathoms has a most considerably lesser gravity, i. e. salinity, than sea-water in 
general. It is not to be supposed, indeed, that this salinity is too slight to allow 
marine alge in general to grow, but is certainly too little to offer tolerable or suitable 
conditions for the development of purely pelagic forms, such as the majority of the 
arctic alge. It is remarkable that the only localities richer in algew that have been met 
with in these seas, are situated in those parts where the influence of the large Siberian 
rivers is least felt, viz. in the most easterly parts of the Kara Sea about Taimyr Is- 
land and in the Siberian Sea east of Cape Baranow. 
In the other parts of the Arctic Sea the salinity of the water is nearly equal to 
that of common sea-water, as is shown by the following table. 
Pl a cue a Eee ad Source of the statement. 
: i 
Phe! INorthtSea (Germant (Ocean)s_.. 2 eee ee — 3,28 Cool. Phys. Geogr. p. 269—270. 
The Atlantic between Scotland and Newfoundland ______._..___- —_ 3,59 » » 
North, Cape and) Spitzbergen 4-2-2 = yen eee eee — 3,53 » » 
The Norwegian Polar Sea, Fugle Sound_.-........_..............- 0 3,34 NorpDENSKIOLD, Préven. p. 110. 
The Murman Sea, Besimannaja Bay -.-_------..--.------<--------+s (0) 3,27 » » 
» » ane ee eee 50 3,42 » » 
» , western mouth of Matotshkin Shar......... 0 3,03 » » 
» » ot ae A. EES 20 3,38 » » 
Mhies Wihite (Seat #.:22.) 1 bh et tees. Pepe tear — 3,22 Sruxpere, Vega-exp. p. 694. 
The American Arctic Sea, Lancaster Sound__ _................-.- 0 3,32 Parry, Zweite Reise, p. 126. 
Baffin Bay, Simiutat on the west coast of Greenland ______-.-- 0 3,41 | 
Nagsugtok » De mes See 0) 3,30 || 
» » De TRIGA, 5 Sei JJENSEN, Gronl. Medd. p. 206—207. 
» » adel Sake 10 3,35 || 
» > DO 2 20 3,36 J 
The Greenland Sea off the east coast of Greenland _._.__.__.-.- 0 3,326 | BorcENn, Zweite deutsche Polarf. p. 680. 
Temperature of the sea. 
The following statements seem to me to afford sufficient 
materials for deciding whether the conditions of temperature in the Arctic Sea are to 
be considered as causing in some degree the peculiarities in the general character of 
the marine vegetation. In the Norwegian Polar Sea near North Cape, according to 
Moun, the average temperature of the sea is 
during December—February.°......-....000-.2 + 3°,03 C. 
wv © March May. 2 + 3°,0 » 
» JME — eS Gere ae ee +7°3 » 
»  September—November .................--- +6,3° 0) 
Observations made during the Swedish expedition of 1872—1873 north and west 
of Spitzbergen in the month of July (I—18) gave the following results: 
") Moan, Temp. Verhaltn. p. 429. 
