Chapter XI.—The Influence of the Sexes on Vegetation Pp. 97-119

The marriage of the King and Queen of May intended to promote the growth of vegetation by homoeopathic magic; intercourse of the sexes practised to make the crops grow and fruit-trees to bear fruit; parents of twins supposed to fertilise the bananas in Uganda; relics of similar customs in Europe; continence practised in order to make the crops grow; incest and illicit love supposed to blight the fruits of the earth by causing drought or excessive rain; traces of similar beliefs as to the blighting effect of adultery and incest among the ancient Jews, Greeks, Romans, and Irish; possible influence of such beliefs on the institution of the forbidden degrees of kinship; explanation of the seeming contradiction of the foregoing customs; indirect benefit to humanity of some of these superstitions.