This section is from the book "A Text Book Of Materia Medica, Being An Account Of The More Important Crude Drugs Of Vegetable And Animal Origin", by Henry G. Greenish. Also available from Amazon: A Text Book of Materia Medica : Being an Account of the More Important Crude Drugs of Vegetable and Animal Origin.
Two distinct varieties of Sumatra benzoin have been known under this name. The one, now generally termed storax-benzoin, has a very agreeable odour resembling storax; the other, known as ' glassy Penang' or simply ' Penang ' benzoin, is distinguished by its glistening, glassy fracture and slight odour. Both varieties are packed like Sumatra benzoin.