Citronella oil. Patchouly. SAPONACEOUS PLANTS. SECTION VI.--DRUGS, INCLUDING NARCOTICS AND OTHER MEDICINAL SUBSTANCES The COCA PLANT. _Cocculus Indicus_. BETEL LEAF. The ARECA PALM; extensive use of the nuts in the East as a masticatory. Narcotic properties. Catechu, or Cutch; its astringent properties. Davy's analysis. Value of the Areca nuts exported from Ceylon. The POPPY: increasing consumption of Opium in this country. Production of the Drug in India. Large revenue derived therefrom. Variety of the poppy grown; system of culture pursued. Various modes of consuming opium. Its preparation and manufacture described. Commercial varieties met with. Requisites for the successful culture of the poppy for opium. The TOBACCO PLANT; species cultivated. London's classification. Analyses of various samples of tobacco; Statistics of the culture in Brazil; extent of the consumption; considerations of revenue; memorial of Liverpool Chamber of Commerce. Comparative consumption of tea, coffee and tobacco, per head. Imports and duty received on tobacco in the last five years. Consumption checked in England and France by the high duties. Imports, sales, and stocks, in Bremen for 10 years. Culture and statistics in the United States. Quantity exported from 1821 to 1850. Countries from whence we received our supplies in 1850. Particulars of the tobacco trade in 1850 and 1853. Mode of culture pursued in Virginia. General instructions for the planter. Information as to growing Cuba tobacco. History of the trade and cultivation in Cuba. Statistics of exports from the Havana. Culture of tobacco in the East. Analysis of tobacco soils. Progress of cultivation and shipments in Ceylon. Manila tobacco and cigars. Production in the Islands of the Archipelago. Suggestions and directions for tobacco culture in New South Wales. Its value and extensive use as a sheep wash. Excellence of the product and manufacture in New South Wales; culture of tobacco in South Australia. MISCELLANEOUS DRUGS. Poisons. ALOES: varieties of the plant; culture and manufacture in Socotra, Barbados, and the Cape Colony. ASAFOETIDA. CAMPHOR. CINCHONA BARK: commercial varieties of CALUMBA ROOT. COLOCYNTH. CUBEBS. GAMBOGE. GENTIAN. IPECACUAN. INTRODUCTORY. The want of a practical work treating of the cultivation and manufacture of the chief Agricultural Productions of the Tropics and Foreign Countries, has long been felt, for not even separate essays are to be met with on very many of the important subjects treated of in this volume.