A possible answer to this question may be found in the following considerations. Many savages consider themselves peculiarly liable on their wedding-day to the attacks of evil spirits. The Hindoos and the Finnish-Ugrians unanimously regard the seating of the bride on the fleece as the right time for exorcising evil spirits and purifying the bride: the Hindoos recite an incantation, the Esthonians clash daggers over her head, for iron is generally dreaded by spirits. It is, therefore, an easy inference that the fleece itself had purificatory powers; and, as a matter of fact, we find that the Greeks, at any rate, regarded a sheepskin in this light, for in the preliminary ceremonies of the Eleusinia was a purificatory rite which was known as the Zeus-fleece.[108] In the collection of the Hôtel Lambert[109] is a red-figured vase bearing a representation of this rite, in which the person purified is represented as crouching on the fleece. In days when marriage by capture was real, and not merely symbolical, it was highly important that a strange woman should, immediately on entering the house, be, so to speak, spiritually disinfected, lest she should introduce unwelcome spirits into her new home; or, in the intimate relations which were to subsist between her and her captor,[110] should bring him into the power of strange and hostile gods. Hence the close adhesion of the ceremony of the fleece, long after its meaning was forgotten, to that of lifting the bride over the threshold.