Nominally the beginning Df the rise of the Nile, was the beginning of the year, and as the ~ile commences to rise very regularly at about the date of the annual heliacal rising of the conspicuous dog-star Sothis (Sirius~ (which itself follows extremely closely the slow retrogression af the Julian year), the primitive astronomers found in the heliacal rising of Sothis as observed at Memphis (on July 9 Julian) a very correct and useful, starting-point for the seasonal year.
(4) Astronomical data, especially the heliacal risings of Sothis recorded by dates of their celebration in the vague year.
Among them the bright star Sirius was any I in special esteem; it was a goddess Sothis (Sopde), often be 1tified by the Egyptians with Isis.
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