6S4 : ORD. XL. Oleracee. LAURUS CAMPHORA, 
noticed the Laurus Cinnamon, to which might be added several 
others which contain some proportion of this substance.* 
The Camphor brought to Europe is to be considered as the 
essential oil of the tree here represented, obtained at Japan by a 
kind of distillation, or sublimation, and for this purpose the root 
is said by Ten Rhyne’ to be the only part employed; but accord- 
ing to Cleyer™ the Camphor is procured not only from the root, 
but also from the young branches; and by Kempfer and Thunberg 
both the root and wood are mentioned as affording this valuable 
medicine." 
Abbé Grosier, and the author of Flora Cochinchinensis,* inform 
us, that this tree, which is called Tch d Tchang,-grows in China to an 
immense: sizé} and the former states the process for obtaining the 
Camphor by the Chinese to be as follows: “ They take some 
branches, fresh from the Tchang, chop them very small, and lay 
them to steep in spring water for three days and three nights. 
After they have been soaked in this manner, they are put into a 
kettle, where they are boiled for a certain time, during which 
they keep continually stirring them with a stick made of willow. 
When they perceive that the sap of these small chips adheres 
sufficiently to the stick in the form of a white frost, they strain 
the whole, taking care to throw away the dregs and refuse. This 
Of these we may cite many of the Verticillate, as sage, ‘rosemary, lavender, 
hyssop, pepper-mint, and many others: Chenopodium ambrosioides. Achillea 
Millifoliam & Ageratum, Unxia camphorata; and more particularly Scheenanthus 
persicus, (Kempf. Amecn. ex. p. 773.) Radix Zedoariz, (Grimm in Eph. n. c. 
Dec. 2. an. 3. p. 409.) Thyme (Phil. Trans. vol. 33. p. 321.) Radix Enule 
(Malouin Chemie med. tom. 1. p. 2) -) Anemone pratensis. Also Rad, asari, 
sem. foeniculi, cubebe, &c. 
A: Lee fe 
= Eph. N.C. Dec. 2. a. 10. p. 79. 
° Kempf. 1. c. p. 772 Thunb. Flor. Japon. p. 72. 
* He says, “ Habitat frequens, & inculta, noa minus in China, quam in 
Japonia.” v. % p, 250. 
