[Sidenote: Esthonian marriage custom.] The theory that impregnation by fire is really impregnation by the wood of the tree with which the fire is kindled, derives some confirmation from a custom which is observed at marriage by some of the Esthonians in the neighbourhood of Oberpahlen. The bride is escorted to a tree, which is thereupon cut down and burned. When the fire blazes up, she is led thrice round it and placed between three armed men, who clash their swords over her head, while the women sing a song. Then some coins are thrown into the fire, and when it has died out they are recovered and knocked into the stump of the tree, which was cut down to serve as fuel.[768] This is clearly a mode of rewarding, first the fire, and next the tree, for some benefit they have conferred on the bride. But in early society husband and wife desire nothing so much as offspring; this therefore may very well be the benefit for which the Esthonian bride repays the tree. [Sidenote: The conception of the Fire-mother intimately bound up with that of the female fire-stick in the fire-drill.] Thus far we have regarded mainly the paternal aspect of the fire, which the Latins mythically embodied in Jupiter, that is literally Father Jove, the god of the oak. The maternal aspect of the fire was for them represented by Mother Vesta, as they called her; and as the Roman king stood for Father Jove, so his wife or daughter—the practice on this point appears to have varied—stood for Mother Vesta. Sometimes, as we have seen, the Vestal virgins, the priestesses or rather incarnations of Vesta, appear to have been the daughters, not the wives, of the king. But, on the other hand, there are grounds for thinking that the wife of King Latinus, the legendary ancestor of the Latins, was traditionally regarded as a Vestal,[769] and the analogy of the Flamen Dialis with his wife the Flaminica, as I shall shew presently, points also to a married pair of priestly functionaries concerned with the kindling and maintenance of the sacred fire. However that may have been, we may take it as probable that the notion of the fire-mother was intimately associated with, if it did not spring directly from, the female fire-stick of the fire-drill, just as the conception of the fire-father was similarly bound up with the male fire-stick.