THE RECENT ADVANCE IN SEISMOLOGY 207 
To these generalizations is added the positive one: 
Whenever a definite member of the sedimentary series 1s found im transgres- 
sion upon the continental areas, the same member will be in recession in the geosyn- 
clinals; 
and reciprocally : 
Whenever a member is found in transgression within the geosynclinals, it will 
be in recession upon the continental areas.* 
‘It should be understood that the views of Haug above expressed 
set forth the attitude of a particular school of geologists; which views 
are opposed, as the quotations from Haug indicate, by those geologists 
who accept the doctrine of continental permanence. 
t Ibid., p. 682. 
