Egyptian fraction have been called "Horus-Eye fractions" after a theory (now discredited) that they were based on the parts of the Eye of Horus symbol. They were used in the Middle Kingdom in conjunction with the later notation for Egyptian fractions to subdivide a hekat, the primary ancient Egyptian volume measure for grain, bread, and other small quantities of volume, as described in the Akhmim Wooden Tablet. If any remainder was left after expressing a quantity in Eye of Horus fractions of a hekat, the remainder was written using the usual Egyptian fraction notation as multiples of a "ro", a unit equal
Horus Bird (Pharaoh) the existence of one or more ephemeral rulers following Qa'a's death and before Hotepsekhemwy of which Horus-Bird may have been one. Egyptologists such as Černý and Peter Kaplony think that Horus-Bird could be identical to the likewise sparsely attested King Horus-Ba. Indeed, this ruler wrote his name with the leg sign or the leg and ram signs, which read "Ba". Černý and Kaplony think that the bird in the serekh of Horus-Bird is the goose sign with the same transcription, "Ba". In this case Horus-Ba and Horus "Bird" could be the same historical figure. Černý and Kaplony's theory is not