en.wikipedia.org/wiki/The_System_of_the_World_(novel)

Multiple bibliographic records for the 2004 first edition contradict the page count given here.

• Open Library’s record for the 2004 William Morrow 1st ed. with the same ISBN (0060523875 / 0-06-052387-5) and the same OCLC number (55036877) lists “Pages 892” and “Number of pages 892.”
• Google Books’ bibliographic entry for The System of the World: Volume Three of The Baroque Cycle (HarperCollins, Sep 21, 2004) also lists “892 pages.”

Because these sources match the edition identifiers in the article, the claim that the first-edition hardback has 912 pages is incorrect.

This sentence misidentifies the part of Newton’s Principia that shares the title.

Authoritative descriptions of Philosophiae Naturalis Principia Mathematica describe it as a work divided into three books. The relevant section is Book III, commonly titled “The System of the World” (De Mundi Systemate / De Mundi Systemate Liber Tertius).

• Wadham College Library’s exhibition on Newton’s Principia says the work “divides into three ‘Books’” and specifically identifies “Book III (Liber Tertius, ‘De Mundi Systemate’ (‘On the System of the World’))”.
• The Stanford Encyclopedia of Philosophy’s entry on Newton’s Principia likewise lists “Book 3 of the Principia” in its structure and table of contents.

So the novel’s title alludes to Book III, not to a “third volume” of the Principia.