Earthquakes traveling through the interior of the globe are like so many messengers sent out to explore a new land. The messages are constantly coming and seismologists are fast learning to read them.


Our Mobile Earth, Chapter I (p. 5), Charles Scribner's Sons. 1926


Earthquakes traveling through the interior of the globe are like so many messengers sent out to explore a new land. The messages are constantly...

Earthquakes traveling through the interior of the globe are like so many messengers sent out to explore a new land. The messages are constantly...

Earthquakes traveling through the interior of the globe are like so many messengers sent out to explore a new land. The messages are constantly...

Earthquakes traveling through the interior of the globe are like so many messengers sent out to explore a new land. The messages are constantly...