Even Paradise itself, says Evelyn, was but a kind of 'nemorous temple or sacred grove,' planted by God himself, and given to man _tanquam primo sacerdoti_; and he goes on to suggest that the groves which the patriarchs are recorded to have planted in different parts of Palestine may have been memorials of that first tree-shaded paradise from which Adam was expelled."
Briefly noticing the antecedent history of plant-worship, it would seem to have lain at the foundation of the old Celtic creed, although few records on this point have come down to us.[9] At any rate we have abundant evidence that this form of belief held a prominent place in the religion of these people, allusions to which are given by many of the early classical writers. Thus the very name of Druidism is a proof of the Celtic addiction to tree-worship, and De Brosses,[10] as a further evidence that this was so, would derive the word kirk, now softened into church, from _quercus_, an oak; that species having been peculiarly sacred. Similarly, in reviewing the old Teutonic beliefs, we come across the same references to tree-worship, in many respects displaying little or no distinction from that of the Celts. In explanation of this circumstance, Mr. Keary[11] suggests that, "The nature of the Teutonic beliefs would apply, with only some slight changes, to the creed of the predecessors of the Germans in Northern and Western Europe. Undoubtedly, in prehistoric days, the Germans and Celts merged so much one into the other that their histories cannot well be distinguished."
Mr. Fergusson in his elaborate researches has traced many indications of tree-adoration in Germany, noticing their continuance in the Christian period, as proved by Grimm, whose opinion is that, "the festal universal religion of the people had its abode in woods," while the Christmas tree of present German celebration in all families is "almost undoubtedly a remnant of the tree-worship of their ancestors."
According to Mr. Fergusson, one of the last and best-known examples of the veneration of groves and trees by the Germans after their conversion to Christianity, is that of the "Stock am Eisen" in Vienna, "The sacred tree into which every apprentice, down to recent times, before setting out on his "Wanderjahre", drove a nail for luck. It now stands in the centre of that great capital, the last remaining vestige of the sacred grove, round which the city has grown up, and in sight of the proud cathedral, which has superseded and replaced its more venerable shade."