CAMPHOR OIL.

The inquiries I formerly made on the subject (not having been myself in the district where the tree grows) led me to believe with confidence that the oil and the dry crystallized resin were not procured from the same individual tree; but in this I was first undeceived by Mr. R. Maidman, who in June 1788 wrote to me from Tappanuli, where he was resident, to the following effect: 

I beg your acceptance of a piece of camphor-wood, the genuine quality of which I can answer for, being cut by one of my own people, who was employed in making charcoal, of which the best for smiths’ work is made from this wood.  On cutting deep into a pretty large tree the fine oil suddenly gushed out and was lost for want of a receiver.  He felled the tree, and, having split it, brought me three or four catties (four or five pounds) of the finest camphor I ever saw, and also this log, which is very rich.  My reason for being thus particular is that the country people have a method of pouring oil of inferior camphor-trees into a log of wood that has natural cracks, and, by exposing this to the sun every day for a week, it appears like genuine camphor; but is the worst sort.

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This coexistence of the two products has been since confirmed to me by others, and is particularly stated by Mr. Macdonald in his ingenious paper on certain Natural Productions of Sumatra, published in the Asiatic Researches Volume 4 Calcutta 1795.  It seems probable on the whole that, as the tree advances in age, a greater proportion of this essential oil takes a concrete form, and it has been observed to me that, when the fresh oil has been allowed to stand and settle, a sediment of camphor is procured; but the subject requires further examination by well-informed persons on the spot.

PRICE.

Head camphor is usually purchased from those who procure it at the rate of six Spanish dollars the pound, or eight dollars the catty, and sells in the China market at Canton for nine to twelve dollars the pound, or twelve to fifteen hundred dollars the pekul of a hundred catties or one hundred thirty-three pounds and a third, avoirdupois.  When of superior quality it sells for two thousand dollars, and I have been assured that some small choice samples have produced upwards of thirty dollars per catty.* It is estimated that the whole quantity annually brought down for sale on the western side of the island does not exceed fifty pekul.  The trade is chiefly in the hands of the Achinese settled at Sinkell, who buy the article from the Batta people and dispose of it to the Europeans and Chinese settlers.

(Footnote.  See Price Currents of the China trade.  Camphor was purchased in Sumatra by Commodore Beaulieu in 1622 at the rate of fifteen Spanish dollars for twenty-eight ounces, which differs but little from the modern price.  In the Transactions of the Society at Batavia it appears that the camphor of Borneo sells in their market for 3200 rix dollars, and that of Japan for 50 rix dollars the pekul.)