Representing a hornedviper. The hieratic Treatise on Ophiology provides a description: âIts color is similar to that of the quail; it has two horns on its forehead; the head is broad, the neck narrow, and the tail thick.â This glyph was conventionally colored yellow. The phonogrammatic value of f is derived by the rebus principle from the word for a viper, ft (Demotic fy).
Gardiner, Alan (1957) Egyptian Grammar: Being an Introduction to the Study of Hieroglyphs, third edition, Oxford: Griffith Institute, âISBN, page 476
Henry George Fischer (1988) Ancient Egyptian Calligraphy: A Beginnerâs Guide to Writing Hieroglyphs, New York: Metropolitan Museum of Art, âISBN
Betrò, Maria Carmela (1995) Geroglifici: 580 Segni per Capire l'Antico Egitto, Milan: Arnoldo Mondadori Editore S.p.A., âISBN
Peust, Carsten (1999) Egyptian Phonology: An Introduction to the Phonology of a Dead Language[1], GĂśttingen: Peust und Gutschmidt Verlag GbR, page 48