Alkaloid use of Ephedra and opium poppies. Also, coca leaves have been used by South American Indians since ancient times. Extracts from plants containing toxic alkaloids, such as aconitine and tubocurarine, were used since antiquity for poisoning arrows. Studies of alkaloids began in the 19th century. In 1804, the German chemist Friedrich Sertürner isolated from opium a "soporific principle" (), which he called "morphium" in honor of Morpheus, the Greek god of dreams; in German and some other Central-European languages, this is still the name of the drug. The term "morphine", used in English and French, was given by the French
Horned God to have supporters. The popular image of the Greek god Pan was removed from its classical context in the writings of the Romantics of the 18th century and connected with their ideals of a pastoral England. This, along with the general public's increasing lack of familiarity of Greek mythology at the time led to the figure of Pan becoming generalised as a 'horned god', and applying connotations to the character, such as benevolence that were not evident in the original Greek myths which in turn gave rise to the popular acceptance of Murray's hypothetical horned god of the witches. The