It must be understood that in this sketch only a very few notable instances of modern chemical research have been given, these being some of the more familiar products which have been introduced into medicine. Favourite colours, odours, and flavours have likewise been synthesised, and the manufacture of some of these artificial products has developed into vast businesses. The object of this chapter has been to make it clear that the marvellous activity which has been displayed in these directions during the past half-century, has been guided by the most profound and skilful research, one step leading to another, and that the new products have not been hit upon by mere chance. XXIV NAMES AND SYMBOLS “Every trade and handicraft, every art, every science, is constantly changing its materials, its processes, and its products; and its technical dialect is modified accordingly, while so much of the results of this change as affects or interests the general public finds its way into the familiar speech of everybody.” (W. DWIGHT WHITNEY:--“Language and its Study.” 1876.) The technological vocabulary of pharmacy is very voluminous, and has been recruited from all languages. Many of the names of vegetable drugs literally household words in English, have been transferred direct from savage tongues. Guaiacum, ipecacuanha, and jalap may be cited as examples. Other names of drugs cover histories which well repay investigation.