A Calculus of Angels

A Calculus of Angels is a fantasy novel by American writer Gregory Keyes, the second book in The Age of Unreason series. It was initially published by Del Rey on March 30, 1999. A follow up to Newton's Cannon, the book is set in 1722 and continues the alternate history where Isaac Newton discovers that alchemy works, and a powerful science is built upon it.

A Calculus of Angels
AuthorGregory Keyes
Cover artistTherese Nielsen
CountryUnited States
LanguageEnglish
SeriesThe Age of Unreason
GenreFantasy
PublisherDel Rey
Publication date
March 30, 1999
Media typePrint (Paperback)
Pages406
ISBN978-0-345-40607-1
OCLC39695456
813/.54 21
LC ClassPS3561.E79 C35 1999
Preceded byNewton's Cannon 
Followed byEmpire of Unreason 

Sources

  • "A Calculus of Angels (Book)." Publishers Weekly 246.12 (22 March 1999): 74.
  • Green, Roland. "Adult books: Fiction." Booklist 95.16 (15 April 1999): 1518.
  • Cassada, Jackie, and Barbara Hoffert. "Book Reviews: Fiction." Library Journal 124.7 (15 April 1999): 148.
  • Vretos, Linda A., and Trevelyn E. Jones. "Adult/Young Adult: Fiction." School Library Journal 46.1 (January 2000): 156.


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