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
Dora (given name) Dora (given name) Dora () is a female name of Greek origin being a shortened form or derived from Dorothea (Dorothy), Theodora meaning "Gift" or in its full form "God's Gift", from , "doron", "gift" + , "theos", "god". The name "Dora" can also be a short form of "Isadora", "Isidora" and other such compound names. The earliest form of the word "doron" is the Mycenaean Greek , "do-ra", meaning "gifts", written in the Linear B syllabic script, but it is not an anthroponym, it is only the plural () of said word; on the other hand, the names "Theodora"