"But Osiris was more than a spirit of the corn; he was also a tree-spirit, and this may well have been his original character, since the worship of trees is naturally older in the history of religion than the worship of the cereals. His character as a tree-spirit was represented very graphically in a ceremony described by Firmicus Maternus. A pine-tree having been cut down, the centre was hollowed out, and with the wood thus excavated an image of Osiris was made, which was then 'buried' in the hollow of the tree. Here, again, it is hard to imagine how the conception of a tree as tenanted by a personal being could be more plainly expressed. The image of Osiris thus made was kept for a year and then burned, exactly as was done with the image of Attis which was attached to the pine-tree. The ceremony of cutting the tree, as described by Firmicus Maternus, appears to be alluded to by Plutarch. It was probably the ritual counterpart of the mythical discovery of the body of Osiris enclosed in the erica-tree. We may conjecture that the erection of the _Tatu_ pillar at the close of the annual festival of Osiris was identical with the ceremony described by Firmicus; it is to be noted that in the myth the erica-tree formed a pillar in the king's house. Like the similar custom of cutting a pine-tree and fastening an image to it, in the rites of Attis, the ceremony perhaps belonged to the class of customs of which the bringing in the Maypole is among the most familiar. As to the pine-tree in particular, at Denderah the tree of Osiris is a conifer, and the coffer containing the body of Osiris is here depicted as enclosed within the tree. A pine-cone often appears on the monuments as an offering presented to Osiris, and a manuscript of the Louvre speaks of the cedar as sprung from him. The sycamore and the tamarisk are also his trees. In inscriptions he is spoken of as residing in them, and his mother Nut is frequently portrayed in a sycamore. In a sepulchre at How (Diospolis Parva) a tamarisk is depicted overshadowing the coffer of Osiris; and in the series of sculptures which illustrate the mystic history of Osiris in the great temple of Isis at Philæ a tamarisk is figured with two men pouring water on it. The inscription on this last monument leaves no doubt, says Brugsch, that the verdure of the earth was believed to be connected with the verdure of the tree, and that the sculpture refers to the grave of Osiris at Philæ, of which Plutarch tells us that it was overshadowed by a _methide_ plant, taller than any olive-tree. This sculpture, it may be observed, occurs in the same chamber in which the god is depicted as a corpse with ears of corn sprouting from him. In inscriptions he is referred to as 'the one in the tree,' 'the solitary one in the acacia,' and so forth. On the monuments he sometimes appears as a mummy covered with a tree or with plants. It accords with the character of Osiris as a tree-spirit