Among the tribes of the Finnish-Ugrian stock in Europe the heathen worship was performed for the most part in sacred groves, which were always enclosed with a fence. Such a grove often consisted merely of a glade or clearing with a few trees dotted about, upon which in former times the skins of the sacrificial victims were hung. The central point of the grove, at least among the tribes of the Volga, was the sacred tree, beside which everything else sank into insignificance. Before it the worshippers assembled and the priest offered his prayers, at its roots the victim was sacrificed, and its boughs sometimes served as a pulpit. No wood might be hewn and no branch broken in the grove, and women were generally forbidden to enter it. But it is necessary to examine in some detail the notions on which the worship of trees and plants is based. To the savage the world in general is animate, and trees and plants are no exception to the rule. He thinks that they have souls like his own, and he treats them accordingly. "They say," writes the ancient vegetarian Porphyry, "that primitive men led an unhappy life, for their superstition did not stop at animals but extended even to plants. For why should the slaughter of an ox or a sheep be a greater wrong than the felling of a fir or an oak, seeing that a soul is implanted in these trees also?" Similarly, the Hidatsa Indians of North America believe that every natural object has its spirit, or to speak more properly, its shade. To these shades some consideration or respect is due, but not equally to all. For example, the shade of the cottonwood, the greatest tree in the valley of the Upper Missouri, is supposed to possess an intelligence which, if properly approached, may help the Indians in certain undertakings; but the shades of shrubs and grasses are of little account. When the Missouri, swollen by a freshet in spring, carries away part of its banks and sweeps some tall tree into its current, it is said that the spirit of the tree cries, while the roots still cling to the land and until the trunk falls with a splash into the stream. Formerly the Indians considered it wrong to fell one of these giants, and when large logs were needed they made use only of trees which had fallen of themselves. Till lately some of the more credulous old men declared that many of the misfortunes of their people were caused by this modern disregard for the rights of the living cottonwood. The Iroquois believed that each species of tree, shrub, plant, and herb had its own spirit, and to these spirits it was their custom to return thanks. The Wanika of Eastern Africa fancy that every tree, and especially every coco-nut tree, has its spirit; "the destruction of a cocoa-nut tree is regarded as equivalent to matricide, because that tree gives them life and nourishment, as a mother does her child." Siamese monks, believing that there are souls everywhere, and that to destroy anything