[Note 20: This name is comprehensive of several kinds of trees whose fruits are used in compounding astringent and slightly purgative medicines.] They also say that a chief called Vagoniona sent from the cavern where he kept his family shut up, a servant to go fishing. This servant, being surprised by the sun, was likewise turned in like manner into a nightingale. On every anniversary of his transformation he fills the night air with songs, bewailing his misfortunes and imploring his master Vagoniona to come to his help. Such is the explanation they give for the nightingale's song. As for Vagoniona, he dearly loved this servant, and therefore deeply lamented him; he shut up all the men in the cavern and only brought out with him the women and nursing children, whom he led to an island called Mathinino, off the coasts; there he abandoned the women and brought back the children with him. These unfortunate infants were starving, and upon reaching the river bank they cried "_Toa, Toa_" (that is like children crying, Mamma, Mamma), and immediately they were turned into frogs. It is for this reason that in the springtime the frogs make these sounds, and it is also the reason why men alone are frequently found in the caverns of Hispaniola, and not women. The natives say that Vagoniona still wanders about the island, and that by a special boon he always remains as he was. He is supposed to go to meet a beautiful woman, perceived in the depths of the sea, from whom are obtained the white shells called by the natives _cibas_, and other shells of a yellowish colour called _guianos_, of both of which they make necklaces. The caciques in our own time regard these trinkets as sacred.[21]