procured. Keempfer,’ who is of this opinion, attributes the 
difference of Teas to the foil and culture of the plant, age of 
the leaves when gathered, and method of curing them *. 
Thefe circumftances will feverally have more or lefs lect 
theugh whether they account for all the varieties obfervable in 
Tea may be doubted. The bohca Tea trees, now introduced 
into many botanic gardens near London,. exhibit very obvious 
varieties. ‘The leaves are of a deeper green colour, and not 
fo deeply ferrated ; the ftalk is ufually of a darker colour, and 
the whole fhrub appears lefs Juxuriant than that reprefented in 
the annexed plate of the bohca Tea; ; but, the botanical. cha- 
racters are the fame. | 
I infufed all the forts of green and bohea "Teas I could pro- 
cure, and expanded the different leaves on paper, to compare 
their refpective fize and texture, intending thereby to difcover 
their age. 1 found the leaves of green ‘Tea as large as thofe 
of bohea, and nearly as fibrous; which would lead one to 
fufpect, that the difference does not fo much Pied upon 
the age, as upon the other circumftances. 
We know that:in Europe the foil, culture, and expofure, 
have great influence on all kinds of vegetables: but the fame 
{pecies of plants differ in the fame province, and even in the 
fame diftrict; and in Japan, and particularly along the continent 
of China, it muft be much more confiderable, where the air is Z 
in fome parts very cold, in others moderate, or warm almoft to 
an extreme. I am perfuaded that the method of ao reion e 
* This renders what has been obferved at the conclusion of Seer. I, more Be | 
probable. ee : : a 
