抄録
The survey, completed in 1966, reveals the hitherto unnoticed fact that benzoin, popularly known as "Sumatran Benzoin", is classified in Singapore into seven categories according to its grade. "Almond, select" and "Almond, unselect", both being of superior quality, are exported unpressed. Those of inferior quality such as "Almond, low grade", "Almond, offgrade", "Brownhalf, scraped grade", "Raw-material, black high grade", and "Raw-material, low grade" are blended by dealers and exported under a variety of names according to the concentration.
Highly graded Siamese Benzoin are shipped unblended.
A laboratory analysis of the collected specimens representing each of the above categories yields the results shown in the appended Table.
