CHAPTER VI,

Sterility of the soil — The belief in the means which the Thauma- turgists were supposed to possess for causing sterility arose particularly from the language of emblems — Sterility produced naturally — Cultures which injure one another— Substances which are prejudicial to vegetation — The atmosphere rendered pestilential — Deleterious powder and nitrate of arsenic employed as offensive weapons — Earthquakes and rumblings of the earth foreseen and predicted . ; 145 — 158