Underground Rivers - new book

 (Note from Thorn:  I have downloaded this but haven't gotten my teeth into it yet, but it looks interesting enough to pass on the word.)

Richard Heggen, Prof. Emeritus of Civil Engineering, University of New Mexico with a courtesy appointment to OSU's Institute for Water and Watersheds, has put on-line his book, Underground Rivers.

http://www.unm.edu/~rheggen/UndergroundRivers.html

It's a whole lot more than you think.

CHAPTERS
1  Greek Mythology
2  Greek Philosophers
3  Roman Encyclopedists
4  The Church, the Arabs, and Back to the Church
5  The Concept of Circulation
6  Subterranean Engines
7  Superterranean Metrics
8  Hydrotheology/Theohydrology
9  Hollow Earth Geophysics
10 Underground Rivers in Classic Fiction
11 Boys Club
12 Waters of the Hollow Earth
13 Underground Rivers in Metaphor and Poetry
14 Underground Rivers in the Fine Arts
15 Groundwater Science
16 Karstology
17 Lava Tubes
18 Subterranean Geophysics
19 Dowsing
20 The Biology of Underground Rivers
21 Plying the Waters from Above
22 Constructed Waterways
23 The Dangers
24 The Rio San Buenaventura