The probable cause of the dis- 

 placement of beach-lines 



An attempt to compute geological epochs 

 By 

 A. Blytt 



(Christiania Videnskabs-Sehkabs Forhandlinger 1889. No. 1) 

 ("With a table). 



Christiania 



'. Commission hos Jacob Dybwad 



A. W. Bwggera Bogtrykkeri 

 1889. 



