18 
B.  Helland-Hansen. 
[No.  15 
water  at  Ling-  Bank  was  of  Atlantic  origin  with  salinities  above 
35  %o,  if  we  are  to  judge  by  the  Danish  observations  in  July; 
while  the  upper  layers  had  salinities  between  31  and  35  7oo- 
Another  point  of  interest  is  found  in  the  vector-diagrams,  Plate 
II.  At  a depth  of  2 meters  the  progressive  vector- diagram  is  fairly 
circular,  at  greater  depths  more  elliptical,  and  the  eccentricity  of 
the  ellipse  increases  regularly  towards  the  bottom.  This  is  also 
indicated  by  the  curves  in  Fig.  6:  in  the  deeper  layers  the  descen- 
ding  lines  show  small  periodic  swells  with  somewhat  rapid  falls 
between  them,  while  the  curves  of  the  surface-layers  show  a 
nearly  straight  course. 
