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Hermione Granger: "Has either of you seen my copy of Numerology and Grammatica?"
Ron Weasley: "Oh, yeah, I borrowed it for a bit of bedtime reading."
— Hermione Granger's search for her textbook[src]

Numerology and Grammatica is an Arithmancy textbook used by third-year students at Hogwarts School of Witchcraft and Wizardry. Hermione Granger briefly misplaced her copy in 1994.[1]

History

In 1997, Hermione considered this book as she was sorting supplies for their mission to find Voldemort's Horcruxes. Apparently, it was useless for what they were about to set out and do, so she decided to leave the book behind.[2]

Behind the scenes

Appearances

Notes and references

  1. Harry Potter and the Prisoner of Azkaban, Chapter 16 (Professor Trelawney's Prediction)
  2. Harry Potter and the Deathly Hallows
Arithmancy
Professors: Septima Vector
Known Arithmancers: Bridget Wenlock
Textbooks: Numerology and Grammatica · New Theory of Numerology
Arithmancy at Hogwarts: Arithmancy (class) · Classroom 7A · Advanced Arithmancy Studies
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