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
Name of Croatia the derivation of Proto-Slavic *xъrvatъ from the Old Persian "xaraxwat-", attested by the Old Iranian toponym "Harahvait-", the native name of Arachosia. "Arachosia" is the Latinized form of Ancient Greek Ἀραχωσία ("Arachosíā"); in Old Persian inscriptions, the region is referred to as "" (). In Indo-Iranian it actually means "one that pours into ponds", which derives from the name of the Sarasvati River of Rigveda. However, although the somewhat suggestive similarity, the connection to the name of Arachosia is etymologically incorrect. The first etymological thesis about the name of the Croats stems from Constantine Porphyrogennetos (tenth century), who connected the