We have still to ask, What is the meaning of such sacrifices? Why were men and animals burnt to death at these festivals? If we are right in interpreting the modern European fire-festivals as attempts to break the power of witchcraft by burning or banning the witches and warlocks, it seems to follow that we must explain the human sacrifices of the Celts in the same manner; that is, we must suppose that the men whom the Druids burnt in wicker-work images were condemned to death on the ground that they were witches or wizards, and that the mode of execution by fire was chosen because burning alive is deemed the surest mode of getting rid of these noxious and dangerous beings. The same explanation would apply to the cattle and wild animals of many kinds which the Celts burned along with the men. They, too, we may conjecture, were supposed to be either under the spell of witchcraft or actually to be the witches and wizards, who had transformed themselves into animals for the purpose of prosecuting their infernal plots against the welfare of their fellow-creatures. This conjecture is confirmed by the observation that the victims most commonly burned in modern bonfires have been cats, and that cats are precisely the animals into which, with the possible exception of hares, witches were most usually supposed to transform themselves. Again, we have seen that serpents and foxes used sometimes to be burnt in the midsummer fires; and Welsh and German witches are reported to have assumed the form both of foxes and serpents. In short, when we remember the great variety of animals whose forms witches can assume at pleasure, it seems easy on this hypothesis to account for the variety of living creatures that have been burnt at festivals both in ancient Gaul and modern Europe; all these victims, we may surmise, were doomed to the flames, not because they were animals, but because they were believed to be witches who had taken the shape of animals for their nefarious purposes. One advantage of explaining the ancient Celtic sacrifices in this way is that it introduces, as it were, a harmony and consistency into the treatment which Europe has meted out to witches from the earliest times down to about two centuries ago, when the growing influence of rationalism discredited the belief in witchcraft and put a stop to the custom of burning witches. Be that as it may, we can now perhaps understand why the Druids believed that the more persons they sentenced to death, the greater would be the fertility of the land. To a modern reader the connexion at first sight may not be obvious between the activity of the hangman and the productivity of the earth. But a little reflection may satisfy him that when the criminals who perish at the stake or on the gallows are witches, whose delight it is to blight the crops of the farmer or to lay them low under storms of hail, the execution of these wretches is really calculated to ensure an abundant harvest by removing one of the principal causes which paralyse the efforts and blast the hopes of the husbandman.
The Druidical sacrifices which we are considering were explained in a different way by W. Mannhardt. He supposed that the men whom the Druids burned in wicker-work images represented the spirits of vegetation, and accordingly that the custom of burning them was a magical ceremony intended to secure the necessary sunshine for the crops. Similarly, he seems to have inclined to the view that the animals which used to be burnt in the bonfires represented the cornspirit, which, as we saw in an earlier part of this work, is often supposed to assume the shape of an animal. This theory is no doubt tenable, and the great authority of W. Mannhardt entitles it to careful consideration.
I adopted it in former editions of this book; but on reconsideration it seems to me on the whole to be less probable than the theory that the men and animals burnt in the fires perished in the character of witches. This latter view is strongly supported by the testimony of the people who celebrate the fire-festivals, since a popular name for the custom of kindling the fires is burning the witches, effigies of witches are sometimes consumed in the flames, and the fires, their embers, or their ashes are supposed to furnish protection against witchcraft. On the other hand there is little to show that the effigies or the animals burnt in the fires are regarded by the people as representatives of the vegetation-spirit, and that the bonfires are sun-charms. With regard to serpents in particular, which used to be burnt in the midsummer fire at Luchon, I am not aware of any certain evidence that in Europe snakes have been regarded as embodiments of the tree-spirit or corn-spirit, though in other parts of the world the conception appears to be not unknown. Whereas the popular faith in the transformation of witches into animals is so general and deeply rooted, and the fear of these uncanny beings is so strong, that it seems safer to suppose that the cats and other animals which were burnt in the fire suffered death as embodiments of witches than that they perished as representatives of vegetation-spirits.
