4 COMMERCIAL BOTANY. 



1809. Quassia wood (Picrtena excelsa) introduced as a medicine. 



Belladonna leaves (Alropa Belladonna) introduced as a 



medicine. 



Cowhage (Mucuna prurient) introduced as a medicine. 

 1813. Cajuput oil (Melaleuca leucadendron, var. minor) introduced 



about this time. 

 Patent granted for an invention for making fabrics air-proof 



by being treated with India-rubber or Caoutchouc. 

 The use of Ipecacuanha as a specific in dysentery confirmed in 



England. 

 1819. The development of the India-rubber trade commenced about 



this time. 

 1820. Colchicum seeds (Cokhicum autumnale) introduced as a 



medicine. 

 1821. Buchu leaves (Barosma crenulata, B. serratifolia, and B. 



betulina) introduced as a medicine. 

 1825. Rusa or ginger grass oil (Andropogon Scheenanthus) introduced 



about this time for perfumery. 

 1826. Vegetable ivory (Phytelephas macrocarpa) introduced about 



this period. 



1829. Indian tobacco (Lobelia injlata) introduced as a medicine. 

 1832. Lemon grass oil (Andropogon citratus), introduced for per- 

 fumery. 

 1835. Greenheart bark (Nectandra Rodicei) first received attention 



as a tonic and febrifuge. 

 1837. Beetroot Sugar Refinery established at Chelsea. 



Gama grass or buffalo grass (Tripsacutn dnctyloides) introduced 



for fodder. 

 1839. Cherry-laurel (Prunus Lawocerasu*) introduced for making 



cherry -laurel water. 



Cultivation of cinchona plants suggested in India. 

 From this period to 1841 Kousso (Hagenia abyssinica) attracted 



some attention as an anthelmintic. 

 1840. Tibet hay (Prangos pabularia) introduced as a fodder plant. 



Ordeal bean of Old Calabar (Physostignui venenotum) intro- 

 duced. 



Ground nut (Arachis nypogcea) introduced. 

 First vineyard planted in S. Australia. 

 1812. Tussock grass (Aira Jlabellata = Dactylis caspitosa) introduced 



as a fodder plant. 



Jute (Corchorus capsularis) introduced about this time. 

 Gutta-percha first brought to notice. 



