A Calculus of Angels

A Calculus of Angels is an alternate history and fantasy novel by American writer Gregory Keyes, the second book in The Age of Unreason series.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> 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.

External links

• Template:Trim {{#if: | " | }}Template:PAGENAMEBASE{{#if: | " | }} title listing at the Internet Speculative Fiction Database

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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