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Not my discovery - the Odd Books site posted about it recently. But when I started this blog I'd hoped to have many more kook books than in fact I've found, though this might only partially fit that description. Granville (1863-1943) was a well-known mathematician with some substantial publications to his credit. (And as the title page notes, also responsible for a "transparent combined ruler and protractor" - something all academic CVs should mention!) Just skimming this book--because honestly it doesn't look quite that interesting--Granville seems to be trying to put Christianity on a firm basis using pure mathematics. Probably not very successfully since this book isn't referenced much afterwards.
