ASAFŒTIDA.—-This drug of commerce is procured from the milky juice of Ferula asafœtida, a plant recently described by Dr. Falconer, under the name of Narthex asafœtida. It is found in Persia, the mountains of Chorasan, the central table land of Affghanistan, and some seeds of it, sent to this country by Dr. Falconer, germinated in the Botanical Garden at Edinburgh, and are now vigorous thriving plants of six years growth. Its leaves have a resemblance to those of a pæony; the fruit is distinguished by divided and interrupted vittae, which form a network on the surface. The perennial roots grow to a very large size, and are seldom of any use until after four or five years' growth. The asafœtida is procured by taking successive slices off the top of the root and collecting the milky juice., which is allowed to concrete into masses of a fetid resinous gummy matter, with a sulphur oil, similar to that of garlic, which is probably its active ingredient.
An inferior sort is obtained from F. persica, another species with very much divided leaves, growing chiefly in the southern provinces of Persia. It comes over usually in casks and cases. The British consumption of the drug is about 10,000 lbs. a year. A little is procured from Scinde. In 1825 the quantity imported was 106,770 lbs., in 1839 only 24 cwts.
The wholesale price in the Liverpool market, in January 1853, was £1 to £3 10s. the cwt.
CAMPHOR.—The Camphor tree (Camphora officinarum, Laurus Camphora) is a native of China, Japan, and Cochin China, of the laurel tribe, with black and purple veins. Camphor is procured from all parts of the tree, but it is obtained principally from the wood by distillation, and subsequent sublimation.
Many plants, such as the cinnamon tree, supply a kind of camphor, but the common camphor of the shops is the produce chiefly of C. officinarum.
Two kinds of unrefined camphor are known in commerce.—1. The Dutch, which is brought from Batavia, and is said to be the produce of Japan. This is imported in tubs covered by matting and each surrounded by a second tub, secured on the outside by hoops of twisted cane. Each tub contains about one cwt. Most of this goes to the continent. 2. Ordinary crude camphor is imported from Singapore and Bombay, in square chests lined with lead-foil, and containing 1¼ to 1½ cwts. It is chiefly produced in the island of Formosa, and is brought by the Chin Chew junks in very large quantities to Canton, whence foreign markets get supplied.—("Pereira's Materia Medica.")
In the southern part of Japan the tree grows in such abundance that, notwithstanding the great consumption of it in the country, large quantities are exported. Kœmpfer says, that the Japanese camphor is made by a simple decoction of the wood and roots, but bears no proportion in value to that of Borneo. There is also an imitation of camphor in Japan, but every body can distinguish it from the genuine.
The camphor of Sumatra is procured from the stem of a large tree, Dryobalanops Camphora, Colebrook; D. aromatica, Graertner. It is secreted in crystalline masses naturally into cavities of the wood. It supplies this camphor only after attaining a considerable age. In its young state it yields, however, by incision, a pale yellow liquid, called the liquid camphor of Borneo and Sumatra, which consists of resin and a volatile oil having a camphorated odor.
An account of this tree, and of the mode of procuring the peculiar and high-priced camphor which it yields, is given by Dr. Junghuhn, who has travelled lately in Sumatra, and Prof. De Vriese, of Leyden, in the "Nederlandsch Kruidkundig Archief" for 1851. An abstract of the memoir, translated into English by Miss De Vriese, is published in "Hooker's Journal of Botany " for February and March 1852:—
The Dryobalanops is a gigantic tree, rising for fifty or even a hundred feet above those which compose the chief mass of the forests where they grow, just as the steeples of the churches appear above the roofs of the houses in a town. The trunks of the full-grown trees are from 7 to 10 feet in diameter at the very base, and from 5 to 8 feet higher up; they rise to the height of 100 or 130 feet, and their ample crown is from 50 to 70 feet in diameter. The tree has a limited range, being confined to the seaward slope of the mountains of southwestern Sumatra, most abundant on the lower slopes and the outlying hills of the alluvial plain, and extending in latitude from 1deg. 10m. to 2deg. 20m. N., and perhaps further to the north. Camphor oil occurs in all the trees, and is most abundant in the younger branches and leaves. The solid camphor is found only on the trunks of older trees, especially in fissures of the wood, and in smaller quantity than is generally supposed. Colebrooke, and authors who have copied from him, assert that camphor is found in the heart of the tree in such a quantity as to fill a cavity of the thickness of a man's arm, and that a single tree yields about eleven pounds. The price of this camphor, which at Padang sells for about 340 dollars per hundred weight, suffices to show that the account is much exaggerated. The camphor occurs only in small fissures, from which the natives, having felled the trees and split up the wood, scrape it off with small splinters or with their nails. From the oldest and richest trees they rarely collect more than two ounces. After a long stay in the woods, frequently of three months, during which they may fell a hundred trees, a party of thirty persons rarely bring away more than 15 or 20 pounds of solid camphor, worth from 200 to 250 dollars. The variety and price of this costly substance are enhanced by a custom which has immemorially prevailed among the Battas, of delaying the burial of every person who during his life had a claim to the title of Rajah (of which each village has one) until some rice, sown on the day of his death, has sprung up, grown and borne fruit. The corpse, till then kept above ground among the living, is now, with these ears of rice, committed to the earth, like the grain six months before; and thus the hope is emblematically expressed that, as a new life arises from the seed, so another life shall begin for man after his death. During this time the corpse is kept in the house, enclosed in a coffin made of the hollowed trunk of a Durion, and the whole space between the coffin and the body is filled with pounded camphor, for the purchase of which the family of the deceased Rajah frequently impoverish themselves. The camphor oil is collected by incisions at the base of the trunk, from which the clear balsamic juice is very slowly discharged.