512 THE CHEMISTEY OF ESSENTIAL OILS
several bodies from which these chemists state that they have isolated a
sesquiterpene. It distilled between 260° and 265° and had a specific
gravity '9344 and a rotary power [a](/ = + 11° 2'. They term this body
winterene, but its chemical identity cannot be regarded as settled.
ANONACE/E.OILS OF YLANG-YLANG AND CANANGA.Ylang-Ylang oil (" flower of flowers ") or oil ot Cananga is the product
of distillation of the flowers of Cananga odorata, a native of Ava and
Tenasserim, and generally distributed and cultivated throughout Southern
G. 49 —(Ylang-Ylang in the main street of Malabon).
_Itimi c- Fila.
Asia. When wild, the tree grows to its maximum height, but its flowers
are said to be almost odourless. The cultivation of the plant reaches its
highest degree of perfection in the Philippine Islands, and the best
variety of the oil is distilled in Manila, where the industry is carried on
in a scientific manner. There is also a considerable industry in this oil
in the island of Beunion. A large quantity of oil also comes from Java
and the neighbourhood, but the oil is not nearly of so fine an odour as
that from the Bast Indies. How far this is due to climatic conditions,
and how far to the less scientific methods used in the distillation of the
oil, it is difficult to say, but there appears to be no doubt that, botanically,
the plant is the same in both districts. The oil is the most pronounced
example of the product of the same plant having entirely different values
according to the locality of production. The oil from the Philippine