I92I. No. II. THE STRANDFLAT AND ISOSTASY 263 



solid rock. A\ e cannot therefore expect such a degree of regularitv in 

 the relation between the two levels of shore-lines as we found in the 

 Tromso and Hammerfest — Alten region. 



If, however, we compute the probable height of the Tapes-line, from 

 the heights which Tanner himself gives for his line le, we find on the 

 whole fairly g(;cd agreement with his heights for his line IIA, except in 

 the region south of the \'aranger Fjord. 



As far as I can see, however. Tanner has mistaken his line le in the 

 region east of Bugofjord. He has there observed three levels of shore- 

 lines, and he has assumed the middle one to be le and the lower to be IIA, 

 but I consider it probable that the uppermost level is his line le. This 

 would give good agreement with our formula for the relation between 

 /f and IIA. It would also give the isobases a more natural shape in this 

 region, without the sudden turn southward which Tanner had to give 

 them on his map [1906, PI. ^]. 



Furthermore it would give a gradual incline of the plane of this 

 shore-line from the region south of \'^aranger Fjord and nortlnxards 

 across the \'aranger Peninsula, without any break, as Tanner has on his 

 diagram [1907, PI. 4. Fig. i]. Hence there will be no necessity to assume 

 that there has been a postglacial dislocation along \ aranger Fjord, as 

 Tanner suggests in order to explain the break in the inclination of the line. 



It might be objected that Tanner has also found three conspicuous 

 levels of shore-lines at several places in the inner part of \"aranger Fjord, 

 c. g. at Nyelv. \"einesbukt, Adelsberg, and Nesseby, and there the middle 

 shore-line is obviously /r. It has, however, to be noticed that at most of 

 these places, more than three shore-lines have been observed, and there 

 is one below le which might well correspond to the middle shore-line in 

 the region to the south-east. 



Although it may be a mere accident. I may just mention that these 

 three shore-lines in the region south of \'aranger Fjord have a certain 

 similarity to the three shore-lines Kaldhol has observed in Nord Fjord, 

 which he calls the upper marine limit, the epiglacial shore-line, and the 

 Tapes-line. 



A\'ith the corrections mentioned above. Tanner's heights (in metres) 

 of his shore-lines le and IIA. have been introduced in the following table. 

 The probable heights of the Tapes-line computed by our formula (2) 

 from the heiglits of his line le, are given in the fourth column, and the 

 difference between these and the observed heights are given in the fifth 

 column, (s, s) added to the name of the place in the first column indi- 

 cates that both shore-lines are marked by shore-ledges cut in solid rock, 

 and (t, t) that they are marked by terraces of loose material or are ledges 

 cut in moraine material, {t, s) or {s, t) indicate that the upper shore-line 

 is marked by terraces of loose material, and the lower line by shore-ledges 

 cut in solid rock or vice versa, (p) indicates that they are marked by 



