122 POPULAR ECONOMIC BOTANY. 



inspected very large quantities of the green sorts, and can- 

 not agree with Mr. Warrington that turmeric is the yellow 

 colouring matter employed, both the smell and taste of that 

 drug being so powerful and peculiar that it could not fail 

 to be detected, and by its strong flavour would spoil the 

 whole quantity ; besides, there is good reason for believing 

 that mineral yellow colours are exported from this country 

 for the purposes of this ingenious adulteration. A very 

 slight magnifying power applied to the spurious tea will 

 show its heterogeneous composition. 



Formerly, all the tea imported into Europe was exported 

 from China ; its culture was however some time since at- 

 tempted in Java, Penang, and Eio de Janeiro. After many 

 failures it has fully succeeded, and large quantities are now 

 raised in the two former places, and its cultivation is extend- 

 ing in South America under the Brazilian government. 



In 1807 Dr. J. Forbes Royle called the attention of the 

 Indian Government to the great probability of the Chinese 

 plant succeeding on the base of the Himalayan mountains, 

 where a species of tea had already been discovered, which 

 was indigenous to the warm moist valleys of those moun- 

 tains. He pointed out the similarity of the temperature, 

 and other circumstances of that locality, to those in which 



