The "vidogoja" were also thought to be able to inflict diseases on people, and to have evil eyes. They could not fly. In the region of Mount Zlatibor in western Serbia, the man who protected the fields of his village from bad weather was called a "vetrovnjak"; the name is derived from "vetar" "wind". At the onset of a storm, the "vetrovnjak" would fall into a trance-like sleep. It was thought that his soul then flew skywards to fight against some black bird which led the storm and hail clouds. After he woke up, he had to rest for some time to restore his physical strength. It was believed that a "vetrovnjak" could take the bad clouds over the estate of a man with whom he was in a conflict. In the region of Dragačevo, western Serbia, people told of the "vilovit" men, who would disappear at the sight of hail clouds, reappearing bloody and with torn clothes after the storm was over. Asked where they had been to, they would only answer that they had gone to fight against those who led the hail clouds toward their village. The adjective "vilovit" means "having a "vila"'s properties" or ""vila"-like". The name "vila" denotes Slavic nymphs or fairies, female anthropomorphic spirits of woods, mountains, clouds, and waters, who had magical powers. In the region of Tamnava, north-western Central Serbia, the "vilovit" men were also called "vetrenjaks". An early mention of "vetrenjaks" is found in a short story by Serbian writer Milovan Glišić, published in 1875. In the story, men from Krnić and nearby villages talk about a battle their "vetrenjaks" fought on a hill to repel a hail storm brought by alien "vetrenjaks". They uprooted oaks and beat each other with them, their bodies turning black and blue from the blows. The defenders were victorious and moved the storm to a mountain, away from their fields. Serbian writer Janko Veselinović was well acquainted with the folklore of Tamnava, where he worked as a teacher in a village. In his short story published in 1888, an elderly woman talks to him about various supernatural beings, including her co-villager Petar, a "vetrenjak": "As soon as he perceives a greyish cloud and hears thunder, Petar leaves whatever he may be doing, and goes somewhere.