In the legend of Endymion the Greek language supplies all that is needed to make it intelligible, but there are many instances of the difficulty, or even the impossibility of explaining certain Greek names by the help of Greek only; since a name is not converted into a myth until its original meaning has become obscured in the language which gave it birth, though still perfectly comprehensible in another of the same family, it behoves the classical philologist to surrender all etymological researches of this nature to the comparative philologist, whose privilege it is to seek to discover the signification of a Greek word by confronting it with contemporary witnesses from the German, Celtic, or Sanscrit. In the Teutonic languages, for instance, day has several names which are derived from the root _dah_, to burn, to be hot; and this same root has also given rise to the Greek name for dawn. In Sanscrit it is called Ahana, from _ahan_ or _dahan_, the root of which is _ah_; _dah_ and _dahan_ may have lost their initial _d_, or this letter may have been added to the root _ah_; these gains and losses are met with frequently. The Sanscrit name Ahana, known before Greek and Sanscrit became separated, occurs but once in a hymn of the Rig-Veda; in India this mythological germ withered away, and even the name Ahana would not have survived, but for this single verse which saved it from oblivion; but it developed into a splendid growth in Greece, in the legend of Eos, which I have quoted. In this hymn addressed to Ushas we read: “We have crossed the frontier of this darkness; Ahana shining forth gives light, lighting up all the world, awakening mortals to walk about--she received praise from every thinker.” Ahana rises from the head of Dyu, the forehead of the sky; she shows herself in the east, she advances and awakens the sleepers. In Sanscrit _budh_ means to wake and to know, but light in Sanscrit has again a double meaning, and means knowledge, much more frequently and distinctly than light; this explains how Ahana, in awakening mortals, causes persons to know. The stories of Daphne and of Ahana are closely allied, and the one explains the other. As long as we remain ignorant of the fact that at first Daphne and Aurora were one, this myth is inexplicable; but turn the name Ahana into Greek, and you have the Dawn in the features of a nymph loved by Apollo, and dying when the bright sun touched her with his rays.