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Ch. III: Rivers and Valleys, pt 2

In The Elements of Geology

Read by Brendan Stallard


William Harmon Norton


Geology is a science of such rapid growth that no apology is expected when from time to time a new text-book is added to those already in th…

The Rivers and Valleys of Pennsylvania, Part 1

In The National Geographic Magazine Vol. 01 No. 3

Read by MaryAnn


William Morris Davis (1850-1934) and National Geographic Society


National Geographic Magazine Volume 1 Number 3 published in 1889. Topics of articles are: The Rivers and Valleys of Pennsylvania Topogra…

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