+261+. Yet beast worship, such as it was and is, has played an important part in religious development. It has furnished a point of crystallization for early ideas, and has supplied interesting objects in which man's demand for superhuman companionship could find satisfaction.[469] It has disappeared when it has been no longer needed. PLANTS +262+. The cult of plants has been as widespread as that of animals, and, if its rôle in the history of religion has been less important than that of the latter, this is because plants show less definite signs of life than animals and enter less intimately than they into the social interests of man. But, like all other things, they are regarded by early man as living, as possessing a nature similar to that of man, and as having power to work good or ill. Trees are represented as thinking, speaking, entering into marriage relations, and in general doing whatever intelligent beings can do. Through thousands of years in the period before the dawn of written history man was brought into constant contact with the vegetable world, and learned by experience to distinguish between plants that were beneficial and those that were harmful. His observation created an embryonic science of medicine, and his imagination an embryonic religious cult. +263+. The value of certain vegetable products (fruits, nuts, wild plants) as food must have become known at a very early time, and these would naturally be offered to the extrahuman Powers. At a later time, when cereals were cultivated, they formed an important part of sacrificial offerings, and were held--as, for example, among the Greeks and the Hebrews--to have piacular efficacy. +264+. Among the discoveries of the early period was that of the intoxicating quality of certain plants--a quality that came to play a prominent rôle in religious life. Valued at first, probably, for the agreeable sensations they produced, such plants were later supposed to possess magical power, to exert a mysterious influence on the mind, and to be the source or medium of superhuman communications. Thus employed by magicians they were connected with the beginnings of religious ecstasy and prophecy. Their magical power belongs to them primarily as living things, but came to be attributed to extrahuman beings. +265+. Plants as living things were supposed to possess souls.[470] Probably the soul was conceived of at first as simply the vital principle, and the power of the plant was thought of as similar to the power of an animal or any other living thing. In the course of time this soul, the active principle, was distinguished from the vital principle, was isolated and regarded as an independent being dwelling in the plant. To it all the powers of the latter were ascribed, and it became a friend or an enemy, an object of worship or of dread.[471]