A Sanskrit name, _sakachera_,[669] is attributed to the species, but as it has left no trace in the different modern languages of India, I am inclined to doubt its reality. The Persian name _hanna_ is more widely diffused and retained than any other (_hina_ of the Hindus, _henneh_ and _alhenna_ of the Arabs, _kinna_ of the modern Greeks). That of _cypros_, used by the Syrians of the time of Dioscorides,[670] has not found so much favour. This fact supports the opinion that the species grew originally on the borders of Persia, and that its use as well as its cultivation spread from the East to the West, from Asia into Africa. +Tobacco+—_Nicotiana Tabacum_, Linnæus; and other species of _Nicotiana_. At the time of the discovery of America, the custom of smoking, of snuff-taking, or of chewing tobacco was diffused over the greater part of this vast continent. The accounts of the earliest travellers, of which the famous anatomist Tiedemann[671] has made a very complete collection, show that the inhabitants of South America did not smoke, but chewed tobacco or took snuff, except in the district of La Plata, Uruguay, and Paraguay, where no form of tobacco was used. In North America, from the Isthmus of Panama and the West Indies as far as Canada and California, the custom of smoking was universal, and circumstances show that it was also very ancient. Pipes, in great numbers and of wonderful workmanship, have been discovered in the tombs of the Aztecs in Mexico[672] and in the mounds of the United States; some of them represent animals foreign to North America.[673]