color. It
therefore appears that the green coloring matter of the oil of wormwood
has been transferred to the oil of cloves.--_Zeitschrift fuer Pharmacie._

* * * * *

ARTIFICIAL PREPARATION OF OIL OF CINNAMON.

BY A. STRECKER.

Some years since, Strecker has shown that styrone, which is obtained
when styracine is treated with potash, is the alcohol of cinnamic acid.
Wolff has converted this alcohol by oxidizing agents into cinnamic acid.
The author has now proved that under the same conditions by which
ordinary alcohol affords aldehyde, styrone affords the aldehyde of
cinnamic acid, that is, oil of cinnamon. It is only necessary to moisten
platinum black with styrone, and let it remain in the air some days,
when by means of the bisulphite of potash the aldehyde double compound
may be obtained in crystals, which should be washed in ether. By the
addition of diluted sulphuric acid, the aldehyde of cinnamic acid is
afterwards procured pure. These crystals also dissolve in nitric acid,
and then form after a few moments crystals of the nitrate of the hyduret
of cinnamyle. The conversion of styrone into the hyduret of cinnamyle by
the action of the platinum black is shown by the following equation:

C_{18}H_{10}O_{2} + 2 O = C_{18}H_{8}O_{2} + 2 HO.--_Comptes Rendus._

* * * * *

DETECTION OF SPIKE OIL AND TURPENTINE IN LAVENDER OIL

BY DR. J. GASTELL.

There are two kinds of lavender oil known in commerce; one, which is
very dear, and is obtained from the flowers of the _Lavandula vera_; the
other is much cheaper, and is prepared from the flowers of the
_Lavandula spica_. The latter is generally termed oil of spike. In the
south of France, whether the oil be distilled from the flowers of the
_Lavandula vera_ or _Lavandula spica_, it is named oil of lavender.

By the distillation of the whole plant or only the stalk and the leaves,
a small quantity of oil is obtained, which is rich in camphor, and is
there called oil of spike. Pure oil of lavender should have a specific
gravity from .876 to .880, and be completely soluble in five parts of
alcohol of a specific gravity of .894. A greater specific gravity shows
that it is mixed with oil of spike; and a less solubility, that it
contains oil of turpentine.

* * * * *

DIFFERENT ORANGE-FLOWER WATERS FOUND IN COMMERCE

BY M. LEGUAY.

There are three sorts of ora