276 IKllJlJOl" NANSF.N. M.-X. Kl. 



'Iliirdly. Tlic uc'if^lit of llic walc-r masses of tlic extensive sea 

 covering'- tlie sui)iiK'rj.(t'l areas iiia\ lia\e relarded tlie ujjheaval of the land 

 to some extent, and may lliiis lia\c made its relative rate differ somewhat 

 from wlial it was aloiij^- tlie Xorwej^ian coast. 



/'oiirlliiy. Ill soullieni .'>ucdi-n and in Deimiark the crustal move- 

 ments ha\e been s(;me\\]iat complicated, as dnrinj,^ some part of the late- 

 g-lacial and poslj^^lacial jjcriod tliere has i)roI)al)l\- heen a subsidence of the 

 land instead of an upheaxal. 



I' If I Illy. Aloni^- the I'altic coasts of Sweden aiKl I'inland the land is 

 still risin,^-. 



The Prcscnt Crusted ]\[o:'cii!Ciils in the Regions rüund the Baltic Sea 

 and the Gulf of BotJinia. 



The present nphea\a] is most rapid (abont 1.2 metre in 100 years) 

 along the Swedish coast of Bottenviken and decreases southwards and 

 south-eastwards. 



According to the investigations of Ivolf Witting [1918] the mean 

 yearly upheaval, during the fifteen years from 1898 to 1912, was i.i cm. 

 in the region of Umeå to Piteå on the west coast of Bottenviken, i.o cm. 

 at Sundsvall, 0.8 cm. south of Söderhamn, 0.7 cm. at Gafle, about 0.45 

 in the region of Stockholm, o.i at Kalmar, and 0.0 at Karlskrona. Along 

 the southern coast of Scania there seems again to have been a slight rise 

 of about o.i cm. yearly, wdiile in southern Jutland and Schleswig, and in 

 the region of Riga there seems to have been a sinking of 0.1 cm. yearly. 



Along the west coast of vSwedcn, in Bohuslän, there are indications 

 of an upheaval still going on, which has been estimated to be as much as 

 0.4 cm. yearly. 



It is a striking feature that lines drawn through the places with equal 

 recent upheaval, according to the observations of Witting [1918, see map 

 p. 274] as well as those of Blomqvist and Renquist [1914, see map p. 83], 

 seem to have directions roughly similar to those of the isobases of the 

 postglacial upheaval, as has already been pointed out by Swedish writers 

 [cf. A. G. Högbom, 1921, p. 139]. 



It seems probable that the present upheaval of the coasts of the 

 Baltic and the Gulf of Bothnia is a continuation of the postglacial up- 

 heaval of Fenno-Scandia, which is not yet quite completed in this region. 



Witting points out the interesting fact that especially in the years 

 with most seismic activity there are certain irregtdarities in the rise of 

 the land. 



The Possihility of a Strandfiat along the Baltic and Bothnian Coasts. 



No formation has been described along the coasts of the Baltic and 

 the Gulf of Bothnia, which seems to correspond to the strandfiat of Nor- 

 way. The Skjærgård (belt of islands and skerries) of the Swedish and 



