Hieroglyphics of Horapollo: Book I: XLII. How They Represent an Horoscopus [Observer of the Hours.]
Hieroglyphics of Horapollo, tr. Alexander Turner Cory, [1840]
To signify an Horoscopus [observer of the hours], they delineate a MAN EATING THE HOURS, not that the man eats the hours, for that is impossible, but because food is prepared for men according to the hours.
64:1 This figure of a man with the emblem of life against his mouth is found; and seems to he the figure alluded to.