3. Allen: "μ, 4.3, orange, and ε were Al Ashfār, the Eyebrows; but, singly, the Arabians designated μ as Al Rās al Asad al Shamāliyy, the Lion's Head towards the South, which, by abbreviation, has become Rasalas in modern lists; and sometimes, but very insufficiently, plain Alshemali. Al Nasr al Din mentioned ε and μ as a whip's length apart, a common expression for measurement among the Arabs, here indicating a little more than 2º." 149.7 - 147.6 = 2.1 is indeed the difference in right ascension:
But we ought to begin earlier, already with κ and λ: "This [κ] was designated by Ulug Beg as Al Minhar al Asad, the Lion's Nose, still correct for it as laid down on the Heis Atlas, although now never used as a star-title." (Allen) "Alterf [λ] is from Al Tarf, the name for the 7th manzil, which it formed with ξ Cancri. The word has generally been rendered the Glance, i.e. of the Lion's eye, although on modern maps the star lies in the open mouth, where Ptolemy located it. But it also had the secondary meaning of the Extremity, still more appropriate here, and so understood by Ideler." (Allen) My thoughts as to the meaning of the 'eye' of the Lion have been presented in The Feelers when discussing manu kake in Ga3-1. The Lion is stretching out his tongue towards the Crab, and it thus becomes his extremity: (Picure by Flamsteed)
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