It is the way to do with Jack-o-lanterns when they become unmannerly.
But I dont see its connection with a black bonnet and forty jack-o-lanterns.
Jack-o-lanterns, the ghosts of the victims of the himégimi, came forth from the old well to haunt and frighten passers-by.
Presently the jack-o-lanterns, lighted now, began to make blobs of gold in the furry darkness of the street.
At Hallowe'en it was as gay with jack-o-lanterns and witches' caps as if the pixies themselves had decorated it.