Second additional note. 



(Read 15 February 1889.) 



In the present additional note I will try to show more 

 fully, that the hypothesis is sufficient to account for the geo- 

 graphical and climatic changes, that have taken place in the 

 Tertiary and Quaternary periods. 



The chief difficulty is the influence of eccentricity on the 

 sea-level. This will be first considered. 



We see how the earth's crust is rent by faults and built of 

 fragments. Dislocations are of common occurrence, showing that 

 the fragments have been displaced in different degree. As the 

 inner strain is relieved by dislocations, we may conclude that 

 the strain must vary in different places, and that it must vary 

 at the same place at different times. In places where the strain 

 is great, earthquakes will probably be of more common occur- 



It is well known that earthquakes are more common and 

 destructive in some parts of the earth than in others. Most 

 earthquakes are caused by dislocations. But these dislocations 

 are only rarely great enough to be immediately observed. In 

 New Zealand, during an earthquake in 1855, a certain part 

 of tne Northern Island was upheaved 0.3—3 metres. The upheaved 

 Part was cut off by a fault, from parts which were unaffected 

 °y the movement. The fault extended over two day's journey. In 

 °ne place a white band of Nullipores was lifted 3 m. above the 

 fevel of the sea. At the same time some parts of the coast of 

 the Southern Island were depressed 1.5 m. 1 Similar sudden 

 ^ings are reported from the coast of Chili (by Fitzroy and 

 Varies Darwin). Darwin was, however, not himself an eye- 

 j^tness of the rising, and Suess is of opinion, that no up- 

 eaval took place on that occasion, but that the ocean retired, 

 t _^Q^urbance of the sea being so great, that it lasted 



#ej/er: Theoretis»he Geologic. Stuttgart 1888. p. 803. 



