As a second labour he ordered him to kill the Lernaean hydra.Compare Eur. Herc. 419ff.; Diod. 4.11.5ff.; Paus. 2.37.4; Paus. 5.5.10; Paus. 5.17.11; Zenobius, Cent. vi.26; Quintus Smyrnaeus, Posthomerica vi.212ff.; Tzetzes, Chiliades ii.237ff.; Verg. A. 8.299ff.; Ov. Met. 9.69ff.; Hyginus, Fab. 30. Diodorus and Ovid multiply the hydra's heads to a hundred; the sceptical Pausanias (Paus. 2.37.4) would reduce them to one. Both Diodorus and Pausanias, together with Zenobius and Hyginus, mention that Herakles poisoned his arrows with the gall of the hydra. The account which Zenobius gives of the hydra is clearly based on that of Apollodorus, though as usual he does not name his authority. That creature, bred in the swamp of Lerna, used to go forth into the plain and ravage both the cattle and the country. Now the hydra had a huge body, with nine heads, eight mortal, but the middle one immortal. So mounting a chariot driven by Iolaus, he came to Lerna, and having halted his horses, he discovered the hydra on a hill beside the springs of the Amymone, where was its den. By pelting it with fiery shafts he forced it to come out, and in the act of doing so he seized and held it fast. But the hydra wound itself about one of his feet and clung to him. Nor could he effect anything by smashing its heads with his club, for as fast as one head was smashed there grew up two. A huge crab also came to the help of the hydra by biting his foot.For this service the crab was promoted by Hera, the foe of Herakles, to the rank of a constellation in the sky. See Eratosthenes, Cat. 11 (who quotes as his authority the of Panyasis); Hyginus, Ast. ii.23. So he killed it, and in his turn called for help on Iolaus who, by setting fire to a piece of the neighboring wood and burning the roots of the heads with the brands, prevented them from sprouting. Having thus got the better of the sprouting heads, he chopped off the immortal head, and buried it, and put a heavy rock on it, beside the road that leads through Lerna to Elaeus. But the body of the hydra he slit up and dipped his arrows in the gall. However, Eurystheus said that this labour should not be reckoned among the ten because he had not got the better of the hydra by himself, but with the help of Iolaus.

As a third labour he ordered him to bring the Cerynitian hind alive to Mycenae.Compare Pind. O. 3.28(50)ff.; Eur. Herc. 375ff.; Diod. 4.13.1; Tzetzes, Chiliades 11.265ff.; Hyginus, Fab. 30. Pindar says that in his quest of the hind with the golden horns Herakles had seen “the land at the back of the cold north wind.” Hence, as the reindeer is said to be the only species of deer of which the female has antlers, Sir William Ridgeway argues ingeniously that the hind with the golden horns was no other than the reindeer. See his 1. (Cambridge, 1901), pp. 360ff. Later Greek tradition, as we see from Apollodorus, did not place the native land of the hind so far away. Oenoe was a place in Argolis. Mount Artemisius is the range which divides Argolis from the plain of Mantinea. The Ladon is the most beautiful river of Arcadia, if not of Greece. The river Cerynites, from which the hind took its name, is a river which rises in Arcadia and flows through Achaia into the sea. The modern name of the river is Bouphousia. See Paus. 7.25.5, with my note. Now the hind was at Oenoe; it had golden horns and was sacred to Artemis; so wishing neither to kill nor wound it, Hercules hunted it a whole year. But when, weary with the chase, the beast took refuge on the mountain called Artemisius, and thence passed to the river Ladon, Hercules shot it just as it was about to cross the stream, and catching it put it on his shoulders and hastened through Arcadia. But Artemis with Apollo met him, and would have wrested the hind from him, and rebuked him for attempting to kill her sacred animal.The hind is said to have borne the inscription “Taygete dedicated (me) to Artemis.” See Pind. O. 3.29(53)ff., with the Scholiast. Howbeit, by pleading necessity and laying the blame on Eurystheus, he appeased the anger of the goddess and carried the beast alive to Mycenae.

As a fourth labour he ordered him to bring the Erymanthian boar alive;As to the Erymanthian boar and the centaurs, see Soph. Trach. 1095ff.; Diod. 4.12; Tzetzes, Chiliades ii.268ff.; Hyginus, Fab. 30. The boar's tusks were said to be preserved in a sanctuary of Apollo at Cumae in Campania (Paus. 8.24.5). now that animal ravaged Psophis, sallying from a mountain which they call Erymanthus. So passing through Pholoe he was entertained by the centaur Pholus, a son of Silenus by a Melian nymph.As to these nymphs, see Hesiod, Th. 187. The name perhaps means an ash-tree nymph (from μελία, an ash tree), as Dryad means an oak tree nymph (from δρῦς, an oak tree). He set roast meat before Hercules, while he himself ate his meat raw. When Hercules called for wine, he said he feared to open the jar which belonged to the centaurs in common.Compare Tzetzes, Chiliades ii.271; Theocritus vii.149ff. The jar had been presented by Dionysus to a centaur with orders not to open it till Herakles came (Diodorus Siculus iv.12.3). But Hercules, bidding him be of good courage, opened it, and not long afterwards, scenting the smell, the centaurs arrived at the cave of Pholus, armed with rocks and firs. The first who dared to enter, Anchius and Agrius, were repelled by Hercules with a shower of brands, and the rest of them he shot and pursued as far as Malea. Thence they took refuge with Chiron, who, driven by the Lapiths from Mount Pelion, took up his abode at Malea. As the centaurs cowered about Chiron, Hercules shot an arrow at them, which, passing through the arm of Elatus, stuck in the knee of Chiron. Distressed at this, Hercules ran up to him, drew out the shaft, and applied a medicine which Chiron gave him. But the hurt proving incurable, Chiron retired to the cave and there he wished to die, but he could not, for he was immortal. However, Prometheus offered himself to Zeus to be immortal in his stead, and so Chiron died. The rest of the centaurs fled in different directions, and some came to Mount Malea, and Eurytion to Pholoe, and Nessus to the river Evenus. The rest of them Poseidon received at Eleusis and hid them in a mountain. But Pholus, drawing the arrow from a corpse, wondered that so little a thing could kill such big fellows; howbeit, it slipped from his hand and lighting on his foot killed him on the spot.Compare Servius on Verg. A. 8.294. So when Hercules returned to Pholoe, he beheld Pholus dead; and he buried him and proceeded to the boar hunt. And when he had chased the boar with shouts from a certain thicket, he drove the exhausted animal into deep snow, trapped it, and brought it to Mycenae.

The fifth labour he laid on him was to carry out the dung of the cattle of Augeas in a single day.As to Augeas and his cattle-stalls, see Theocritus xxv.7ff.; Diod. 4.13.3; Paus. 5.1.9ff.; Tzetzes, Chiliades ii.278ff. (who seems to follow Apollodorus); Scholiast on Hom. Il. ii.629, xi.700; Scholiast on Ap. Rhod., Argon. i.172; Hyginus, Fab. 30. According to the rationalistic Pausanias, the name of the father of Augeas was Eleus (Eleios), which was popularly corrupted into Helios, “Sun”; Serv. Verg. A. 8.300. Now Augeas was king of Elis; some say that he was a son of the Sun, others that he was a son of Poseidon, and others that he was a son of Phorbas; and he had many herds of cattle. Hercules accosted him, and without revealing the command of Eurystheus, said that he would carry out the dung in one day, if Augeas would give him the tithe of the cattle. Augeas was incredulous, but promised. Having taken Augeas's son Phyleus to witness, Hercules made a breach in the foundations of the cattle-yard, and then, diverting the courses of the Alpheus and Peneus, which flowed near each other, he turned them into the yard, having first made an outlet for the water through another opening. When Augeas learned that this had been accomplished at the command of Eurystheus, he would not pay the reward; nay more, he denied that he had promised to pay it, and on that point he professed himself ready to submit to arbitration. The arbitrators having taken their seats, Phyleus was called by Hercules and bore witness against his father, affirming that he had agreed to give him a reward. In a rage Augeas, before the voting took place, ordered both Phyleus and Hercules to pack out of Elis. So Phyleus went to Dulichium and dwelt there,Compare Hom. Il. 2.629, with the Scholiast; Paus. 5.1.10, Paus. 5.3.1-3. and Hercules repaired to Dexamenus at Olenus.Compare Bacchylides, referred to by the Scholiast on Hom. Od. xi.295; Bacch., ed. R. C. Jebb, p. 430; Diod. 4.33.1; Paus. 7.18.1; Hyginus, Fab. 33. He found Dexamenus on the point of betrothing perforce his daughter Mnesimache to the centaur Eurytion, and being called upon by him for help, he slew Eurytion when that centaur came to fetch his bride. But Eurystheus would not admit this labour either among the ten, alleging that it had been performed for hire.