The associations of Notus and Eurus are frequent[565]. On one occasion, however, Notus is combined with Zephyr, though there is no corresponding case of junction between Eurus and Boreas. Notus and Zephyr are sent from the sea by Juno to blast the Trojan army with heat. Boreas would of course be a cold wind: and Eurus would be cold on the plain of Troy, from passing over the chain of Ida: though in Greece he melts the snow that Zephyr has brought. Differences of season, as well as of situation, may have to do with these varieties of operation. [565] Il. ii. 144-6. xvi. 765. Od. v. 330. xii. 326. Though less strong than Zephyr and Boreas, Notus is a stronger wind than Eurus. And though generally the counterpart of Boreas, his power of cooperating with Zephyr shows that he must reach over the quadrant from the South pole to West, whereas we have no Boreas coming down from the North pole as far as East. As the opposite of Zephyr, Eurus blows principally from the south-eastern quarter; and hence is in frequent cooperation with Notus, but never with any other wind. He must, however, be understood to cover the whole space from the rigidly northern Boreas down to Notus, or from about N.E. to within 30° of the South pole. Boreas is inflexibly confined by all the evidence of the poems to a very narrow space: and Eurus, his neighbour eastward, does not much frequent those points of the compass that lie nearest to him. [Illustration: winds and directions] The accompanying sketch expresses what I believe to be in the main Homer’s arrangement of the Winds. At the same time, I do not know that we have any practical example of any wind in Homer which blows from within forty-five degrees on either side of due East, or from within about the same number of degrees on either side of due West. Perhaps it was from their local infrequency, that he does not appear to have put such winds in requisition[566]. [566] Friedreich has discussed the winds of Homer (Realien der Il. und Od. §. 3). His results are to me unsatisfactory: but the fault seems to lie in his basis. For (1) he fixes the four Winds of Homer as the four cardinal points: and (2) he finds _data_ for ascertaining the Winds in the Passages of the Outer Geography, instead of determining those Passages themselves by the Winds, after these latter have been ascertained from evidence belonging to the sphere of Homer’s own experience.