With this third part of _The Golden Bough_ we take up the question, Why had the King of the Wood at Nemi regularly to perish by the hand of his successor? In the first part of the work I gave some reasons for thinking that the priest of Diana, who bore the title of King of the Wood beside the still lake among the Alban Hills, personated the great god Jupiter or his duplicate Dianus, the deity of the oak, the thunder, and the sky. On this theory, accordingly, we are at once confronted with the wider and deeper question, Why put a man-god or human representative of deity to a violent death? Why extinguish the divine light in its earthly vessel instead of husbanding it to its natural close? My general answer to that question is contained in the present volume. If I am right, the motive for slaying a man-god is a fear lest with the enfeeblement of his body in sickness or old age his sacred spirit should suffer a corresponding decay, which might imperil the general course of nature and with it the existence of his worshippers, who believe the cosmic energies to be mysteriously knit up with those of their human divinity. Hence, if there is any measure of truth in this theory, the practice of putting divine men and particularly divine kings to death, which seems to have been common at a particular stage in the evolution of society and religion, was a crude but pathetic attempt to disengage an immortal spirit from its mortal envelope, to arrest the forces of decomposition in nature by retrenching with ruthless hand the first ominous symptoms of decay. We may smile if we please at the vanity of these and the like efforts to stay the inevitable decline, to bring the relentless revolution of the great wheel to a stand, to keep youth’s fleeting roses for ever fresh and fair; but perhaps in spite of every disillusionment, when we contemplate the seemingly endless vistas of knowledge which have been opened up even within our own generation, many of us may cherish in our heart of hearts a fancy, if not a hope, that some loophole of escape may after all be discovered from the iron walls of the prison-house which threaten to close on and crush us; that, groping about in the darkness, mankind may yet chance to lay hands on “that golden key that opes the palace of eternity,” and so to pass from this world of shadows and sorrow to a world of untroubled light and joy. If this is a dream, it is surely a happy and innocent one, and to those who would wake us from it we may murmur with Michael Angelo, “_Però non mi destar, deh! parla basso._” J. G. FRAZER. CAMBRIDGE, _11th June 1911_. CHAPTER I. THE MORTALITY OF THE GODS.