ON A NEW CURRENT-METER. 185 



and not with position, though certainly on that day the wind 

 did not wholly drop, but only subsided somewhat and changed. 

 On the 15th April, at St. V, current-observations were made 

 for the last time, now also in a strong ENE wind. The results 

 are given on PI. XXII (figs. 40—44). They are given here to 

 show that regular deep currents are not always to be found, 

 even with high wind. It appears (figs. 43 & 44) that the quite 

 strong cui'rents at depths of from 25 to 50 m. are exceedingly 

 irregular, but nevertheless the same main direction is perceived 

 as on the preceding day. A further division of the observations 

 from 35 to 50 m. into small groups does not appear to bring 

 to light any greater regularity. 



As a summary of what may be worthy of note in the 

 experiments described above, the following points may be pre- 

 sented, and this I do in as concrete a form as possible, without 

 entering upon the difficult task of drawing any general conclu- 

 sions. 



1) The water in the fjord was not at rest, but was in mo- 

 tion from the surface down to the very bottom, with velocities 

 from one or two, up to 20 cm. per sec. 



2) Different water-strata of as little as a metre's thickness 

 might, with remarkable ease, float above one another, without 

 directly checking one another's movement. Thus, several times, 

 permanent great changes were observed in the current at a depth 

 of 1"4 metres (consisting of actual oscillations, or possibly occa- 

 sioned by passing horizontal vortices), while the current at depths 

 of 0'5 and 2*2 metres was almost unaffected by them. 



3) If exception is made of the region nearest the mouth 

 of the river, where the river-water supphes a surface current of 

 about 1 m. in depth, the wind on the part of the fjord that was 

 free from ice seems to have been the moi-e or less immediately 

 acting motive power of the currents, both at the surface and 

 below. Near the surface, quite regular currents of depths up to 



