1907] 
Gurrent-Measurements. 
27 
tion  as  the  stream  at  the  surface;  but  we  have  too  few  observa- 
tions  to  be  positive  on  this  point. 
Off  HirtshalTs  Lig-ht  on  the  Danish  side  of  the  Skager- 
ack  Dr.  Damas  took  measurements  of  the  current  during  about 
22  hours  on  the  30th  and  31st  July  (St.  324).  Figure  11  shows 
the  directions  of  the  current  at  the  different  depths.  It  will  at 
once  become  evident  from  the  figure  that  in  the  upper  layers  down 
to  about  20 — 30  meters  there  was  a current  with  a constant  direc- 
tion  and  that  no  tidal  movements  could  be  remarked.  From  the 
progressive  vector-diagrams  it  appears  that  the  current  at  2 meters 
had  an  average  velocity  of  over  45  cm.  per  second  and  a direction 
from  S Id'’  W (true).  In  the  deeper  layers  the  current  went 
rather  more  eastwards  and  followed  the  Danish  coast,  but  here  too 
the  velocities  were  considerable  at  a depth  of  5 to  20  meters. 
Below  20  meters  the  average  velocities  decreased  rather  fast  and 
at  75  and  90  meters  we  were  unable  from  our  material  to  definitely 
trace  any  resulting  current.  This  entirely  accords  with  the  condi- 
tions  of  salinity:  Atlantic  water  of  over  35  %o  was  found  at  a 
depth  of  about  50  meters,  whereas  all  surface-water  was  largely 
composed  of  a freshish  coast  water,  and  at  from  20  to  50  meters 
there  was  North  Sea-water  with  a salinity  betwmen  34  %o  and 
35  %o. 
The  curves  of  direction  on  figure  11  show  however  at  7 5 and 
90  meters,  in  this  deep  Atlantic  layer,  the  typical  course 
