book cover of A Calculus of Angels

A Calculus of Angels

(1999)
(The second book in the Age of Unreason series)
A novel by

 
 

1722: A second Dark Age looms. An asteroid has devastated the Earth, called down by dire creatures who plot against the world of men. The brilliant-- some say mad--Isaac Newton has taken refuge in ancient Prague. There, with his young apprentice Ben Franklin, he plumbs the secrets of the aetheric beings who have so nearly destroyed humanity.

But their safety is tenuous. Peter the Great marches his unstoppable forces across Europe. And half a world away, Cotton Mather and Blackbeard the pirate assemble a party of colonial luminaries to cross the Atlantic and discover what has befallen the Old World. With them sails Red Shoes, a Choctaw shaman whose mysterious connections to the invisible world warn him that they are all moving toward a confrontation as violent as it is decisive . . .



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Used availability for J Gregory Keyes's A Calculus of Angels

Hardback Editions

June 2008 : USA Library Binding
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Title: A Calculus of Angels (The Age of Unreason, Book 2)
Author(s): J Gregory Keyes
ISBN: 1-4395-0120-3 / 978-1-4395-0120-7 (USA edition)
Publisher: Paw Prints 2008-06-26
Availability: Amazon   Amazon UK   


January 1999 : USA Hardback
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Title: A Calculus of Angels (The Age of Unreason, Book 2)
Author(s): J Gregory Keyes
ISBN: 0-7394-0260-9 / 978-0-7394-0260-3 (USA edition)
Publisher: The Ballantine Publishing Grou
Availability: Amazon   Amazon UK   


Paperback Editions

October 2004 : UK Paperback
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Title: A Calculus of Angels (Age of Unreason)
Author(s): Greg Keyes
ISBN: 0-330-41998-6 / 978-0-330-41998-7 (UK edition)
Publisher: Tor
Availability: Amazon   Amazon UK   Amazon AU   


February 2000 : USA Mass Market Paperback
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Title: A Calculus of Angels (The Age of Unreason, Book 2)
Author(s): J Gregory Keyes
ISBN: 0-345-40608-7 / 978-0-345-40608-8 (USA edition)
Publisher: Del Rey
Availability: Amazon   Amazon UK   Amazon CA   


March 1999 : USA Paperback
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Title: A Calculus of Angels (The Age of Unreason, Book 2)
Author(s): J Gregory Keyes
ISBN: 0-345-40607-9 / 978-0-345-40607-1 (USA edition)
Publisher: Del Rey
Availability: Amazon   Amazon UK   Amazon CA   


Kindle Editions

December 2015 : USA, Australia, Canada, UK Kindle edition
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Title: A Calculus of Angels (The Age of Unreason Book 2)
Author(s): Greg Keyes
Publisher: Open Road Media Sci-Fi & Fantasy
Availability: Amazon   Amazon UK   Amazon CA   Amazon AU