Once she is off, the pack should pursue with vigour. (18) They must not relax their hold, but with yelp and bark full cry insist on keeping close and dogging puss at every turn. Twist for twist and turn for turn, they, too, must follow in a succession of swift and brilliant bursts, interrupted by frequent doublings; while ever and again they give tongue and yet again till the very welkin rings. (19) One thing they must not do, and that is, leave the scent and return crestfallen to the huntsman. (20) (18) Lit. "let them follow up the chase vigorously, and not relax, with yelp and bark." (19) {dikaios}, Sturz, "non temere"; "and not without good reason." Al. "a right good honest salvo of barks." (20) Lit. "Let them not hark back to join the huntsman, and desert the trail." Along with this build and method of working, hounds should possess four points. They should have pluck, sound feet, keen noses, and sleek coats. The spirited, plucky hound will prove his mettle by refusing to leave the chase, however stifling the weather; a good nose is shown by his capacity for scenting the hare on barren and dry ground exposed to the sun, and that when the orb is at the zenith; (21) soundness of foot in the fact that the dog may course over mountains during the same season, and yet his feet will not be torn to pieces; and a good coat means the possession of light, thick, soft, and silky hair. (22) (21) i.e. "at mid-day"; or, "in the height of summer"; al. "during the dog-days"; "at the rising of the dog-star." (22) See Pollux, ib. 59; Arrian, vi. 1. As to the colour proper for a hound, (23) it should not be simply tawny, nor absolutely black or white, which is not a sign of breeding, but monotonous--a simplicity suggestive of the wild animal. (24) Accordingly the red dog should show a bloom of white hair about the muzzle, and so should the black, the white commonly showing red. On the top of the thigh the hair should be straight and thick, as also on the loins and on the lower portion of the stern, but of a moderate thickness only on the upper parts. (23) See Stonehenge, p. 25; Darwin, op. cit. ii. 109. (24) But see Pollux, ib. 65, who apparently read {gennaion touto to aploun alla therides}; al. Arrian, vi. See Jaques de Fouilloux, "La Venerie" (ap. E. Talbot, "Oeuvres completes de Xenophon," traduction, ii. 318).