In various parts of Europe customs have prevailed both at spring and harvest which are clearly based on the same crude notion that the relation of the human sexes to each other can be so used as to quicken the growth of plants. For example, in the Ukraine on St. George's Day (the twenty-third of April) the priest in his robes, attended by his acolytes, goes out to the fields of the village, where the crops are beginning to show green above the ground, and blesses them. After that the young married people lie down in couples on the sown fields and roll several times over on them, in the belief that this will promote the growth of the crops. In some parts of Russia the priest himself is rolled by women over the sprouting crop, and that without regard to the mud and holes which he may encounter in his beneficent progress. If the shepherd resists or remonstrates, his flock murmurs, "Little Father, you do not really wish us well, you do not wish us to have corn, although you do wish to live on our corn." In some parts of Germany at harvest the men and women, who have reaped the corn, roll together on the field. This again is probably a mitigation of an older and ruder custom designed to impart fertility to the fields by methods like those resorted to by the Pipiles of Central America long ago and by the cultivators of rice in Java at the present time. To the student who cares to track the devious course of the human mind in its gropings after truth, it is of some interest to observe that the same theoretical belief in the sympathetic influence of the sexes on vegetation, which has led some peoples to indulge their passions as a means of fertilising the earth, has led others to seek the same end by directly opposite means. From the moment that they sowed the maize till the time that they reaped it, the Indians of Nicaragua lived chastely, keeping apart from their wives and sleeping in a separate place. They ate no salt, and drank neither cocoa nor _chicha,_ the fermented liquor made from maize; in short the season was for them, as the Spanish historian observes, a time of abstinence. To this day some of the Indian tribes of Central America practise continence for the purpose of thereby promoting the growth of the crops. Thus we are told that before sowing the maize the Kekchi Indians sleep apart from their wives, and eat no flesh for five days, while among the Lanquineros and Cajaboneros the period of abstinence from these carnal pleasures extends to thirteen days. So amongst some of the Germans of Transylvania it is a rule that no man may sleep with his wife during the whole of the time that he is engaged in sowing his fields. The same rule is observed at Kalotaszeg in Hungary; the people think that if the custom were not observed the corn would be mildewed. Similarly a Central Australian headman of the Kaitish tribe strictly abstains from marital relations with his wife all the time that he is performing