Doyle, in his works, never describes the contents of the treatise. This has not stopped people from speculating on what it might have contained. Mathematician Harold Davis, in the book "The Summation of Series", attributes certain binomial identities to Moriarty. These have been expanded on in further work, tying the "Treatise" into the standard mathematical literature. Less formal depictions of the content are also available. For example, in 1955 science fiction writer Poul Anderson wrote about the treatise for "The Baker Street Journal".