According to some authors, myrrh[1] is the produce of a tree that grows in the same forests as the incense-tree, though most say that they grow in different places: but the fact is that myrrh grows in many parts of Arabia, as will be seen when we come to speak of the several varieties of it. A sort that is highly esteemed is brought from the islands[2] also, and the Sabæi even cross the sea to procure it in the country of the Troglodytæ. It is grown also by being transplanted, and when thus cultivated is greatly preferred to that which is grown in the forests. The plant is greatly improved by raking and baring the roots; indeed, the cooler the roots are kept, the better it is.