_Fairy Preserves._--'A heap of stones in a field should not be disturbed, though needed for building--especially if they are part of an ancient tumulus. The fairies are said to live inside the pile, and to move the stones would be most unfortunate. If a house happens to be built on a fairy preserve, or in a fairy track, the occupants will have no luck. Everything will go wrong. Their animals will die, their children fall sick, and no end of trouble will come on them. When the house happens to have been built in a fairy track, the doors on the front and back, or the windows if they are in the line of the track, cannot be kept closed at night, for the fairies must march through. Near Ballinrobe there is an old _fort_ which is still the preserve of the fairies, and the land round it. The soil is very fine, and yet no one would dare to till it. Some time ago in laying out a new road the engineers determined to run it through the _fort_, but the people rose almost in rebellion, and the course had to be changed. The farmers wouldn't cut down a tree or bush growing on the hill or preserve for anything.' _Fairy Control over Crops._--'Fairies are believed to control crops and their ripening. A field of turnips may promise well, and its owner will count on so many tons to the acre, but if when the crop is gathered it is found to be far short of the estimate, the explanation is that the fairies have extracted so much substance from it. The same thing is the case with corn.' _November Eve and Fairies._--'On November Eve it is not right to gather or eat blackberries or sloes, nor after that time as long as they last. On November Eve the fairies pass over all such things and make them unfit to eat. If one dares to eat them afterwards one will have serious illness. We firmly believed this as boys, and I laugh now when I think how we used to gorge ourselves with berries on the last day of October, and then for weeks after pass by bushes full of the most luscious fruit, and with mouths watering for it couldn't eat it.' _Fairies as Flies._--'There is an old abbey on the river, in County Mayo, and people say the fairies had a great battle near it, and that the slaughter was tremendous. At the time, the fairies appeared as swarms of flies coming from every direction to that spot. Some came from Knock Ma, and some from South Ireland, the opinion being that fairies can assume any form they like. The battle lasted a day and a night, and when it was over one could have filled baskets with the dead flies which floated down the river.'