A common _motif_ of such stories is provided by the belief that dragons are the guardians of buried treasure. When a man in a dream has had revealed to him the whereabouts of buried treasure, his right course is to go to the spot without breathing to anyone a hint of his secret, and there to slay a cock or other animal such as is offered at the laying of foundation-stones, in order to appease the _genius_ (which is almost always a dragon, though an Arab is occasionally substituted) before he ventures to disturb the soil. This is the very superstition which Artemidorus had in mind when he interpreted dreams about dragons to denote ‘wealth and riches, because dragons make their fixed abode over treasures[740].’ Having complied with these conditions the digger may hope to bring gold to light; but if he have previously betrayed to anyone his expectations or have failed to propitiate the dragon, the old proverb is fulfilled, ἄνθρακες ὁ θησαυρός[741], his treasure turns out to be but ashes (κάρβουνα). The guardianship likewise of gardens wherein flow ‘immortal waters’ or grows ‘immortal fruit’ is the province of dragons. In Tenos a typical story concerning them is told in several versions[742]. The hero of them all bears the name of Γιαννάκης or ‘Jack’ (a familiar diminutive of Ἰωάννης, ‘John’)--a name commonly given in Greek fairy-tales to the performer of Heraclean feats. The hero who, after discovering that his youngest sister is a Strigla, has fled with his mother, the queen, from the palace where they were in imminent danger of being devoured[743], comes to a castle occupied by forty dragons. The prince straightway attacks them single-handed and slays, so he thinks, all of them, but in reality one has only feigned to be dead and so escapes to a hole beneath the castle, of which Jack now becomes the master. The remaining dragon however ventures forth, when the prince is gone out to the chase, and makes love to the queen, and after a while dragon and queen knowing that the prince would be incensed at their intrigue conspire to kill him. To this end the queen on her son’s return pretends to be ill, and in response to his enquiries tells him that the only thing that can heal her is ‘immortal water[744],’ which, as her paramour, the dragon, knows, is to be found only in a distant garden guarded by one or more other dragons. The prince at once undertakes to obtain the desired remedy, and is directed by a witch (who in some versions appears as the impersonation of his τύχη or ‘Fortune’) whither to go and how to deal with the dragons. These accordingly he slays or eludes, and so returns home unhurt bringing the immortal water. Then once more the dragon and the queen take counsel together, and the pretence of illness is repeated with a demand this time for some immortal fruit or herb[745] known to be guarded in the same way as the water; and once more the prince sets out and circumvents the dragons in some new fashion.