NOT DUE TO HEAT. 277 



yellow, and making the infusion as light as green 

 tea. (P. 150. § 3.) The yellow speckled leaf of 

 Twankay tea affords another example of the effect 

 of excess of temperature turning the burnt parts 

 not black, but yellow. 



Mulder further states, that frequent effusions 

 and evaporations of the infused leaves of green tea r 

 by a continued application of heat at a low tempe- 

 rature, was found to darken their colour to that of 

 black tea ; and that " extractive " thus procured 

 yielded " apothem" which experiment Mulder con- 

 sidered sufficient proof that black and green tea 

 could be made from the same parcel of leaves by 

 use of a high or low temperature, (lb. p. 639.) 



That black and green tea can be made from the 

 same parcel of leaves, no longer admits of doubt. 

 Moreover, it is clear, that the difference of colour 

 does not arise from difference of temperature. These 

 facts have been sufficiently established in the course 

 of this examination. They also receive confirmation 

 from Mr. Jacobson at Java : this author distinctly 

 states, that black and green teas are made in the 

 same plantation, from shrubs propagated from the 

 same seed, and occasionally, as in Pekoe and Gun- 

 powder, from the same parcel of leaves : also, that 

 the colour of black tea is due to manipulation pre- 

 viouslv to roasting. 



That the leaves of green tea darken in colour 

 after infusion if re-dried, is also true ; for if after 



T 3 



