4^2 
as follows : 
T 
li ey 
f< 
o m e 
Camphor by the Chineie to be 
branches, frefh from the C T change chop them very final 1, and lay them 
they 
Aft 
to fteep in fpring water for three days and three nights, 
have been foaked in this manner, they are put into a kettle, wh 
they are boiled for a certain time, during which they keep continually 
flirrine them with a flick made of willow. When they perceive that 
the fap of thefe fmall chips adheres fufficiently to the flick in the form 
of a white froft, they ftrain the whole, taking care to throw away 
the dregs and refufe. This j nice is afterwards poured gently into a 
to remain- 
Next morning it is found coagulated, and formed into a 
new earthen bafon, well varnifhed, in which it is 
one m 
ht. 
folid mafs. To purify this firft preparation, they procure fome earth 
from an old earthen wail, which, when pounded and reduced to a 
very fine powder, they put into the bottom of a bafon made of red 
copper ; over this layer of earth they fpread a layer of Camphor, and 
continue thus until they have laid four ftrata. The laft, which is of 
very fine earth, they cover up with the leaves of pennyroyal ; and 
over the whole they place another bafon, joining it clofely to the 
former by means of a kind of red earth, that cements their brims 
together. 
The bafon thus prepared is put over a fire, which muff, 
be managed fo as to keep up an equal heat : experience teaches them 
to obferve the proper degree. But above all, they muft be very atten- 
tive left the plafter of fat earth', which keeps the bafons together, 
ihould crack or fall off; otherwife the fpirituous parts would evapo- 
rate and ruin the whole procefs. When the bafons have been expofed 
to the neceffary heat, they are taken off and left to cool ; after which 
they are feparated, and the fublimated Camphor is found adhering to 
th 
cover. 
Camphor 
If this operation is repeated two or three times, the 
is found purer and in larger pieces. Whenever it is 
neceffary to ufe any quantity of this fubftance, it is put between two 
earthen vefiels, the edges of which are furrounded with feveral bands 
of wet paper. Thefe veffels are kept for about an hour over an equal 
and moderate fire, and when they are cool the Camphor is found in 
its utmoft perfection, and ready for ufe." 
I he crude Camphor, exported from Japan, appears in 
fmall 
greyifh pieces, and is intermixed with 
various extraneous matters: i" 
9 See General Defcription of China, tranflated from the French, vol. i. p-45 1 - 
this 
