ries of the 1851 Exhibition, consists of a large
glass tube in the form of a coil, which at the upper end divides into
two tubes; each of which is provided with a funnel. A stream of nitric
acid flows slowly into one of the funnels, and benzole into the other.
The two substances meet at the point of union of the tubes, and a
combination ensues with the evolution of heat. As the newly formed
compound flows down through the coil it becomes cool, and is collected
at the lower extremity; it then requires to be washed with water, and
lastly with a dilute solution of carbonate of soda, to render it fit for
use. Nitro-benzole, which is the chemical name for this artificial otto
of almonds, has a different odor to the true otto of almonds, but it can
nevertheless be used for perfuming soap. Mr. Mansfield writes to me
under date of January 3d, 1855:--"In 1851, Messrs. Gosnell, of Three
King Court, began to make this perfume under my license; latterly I
withdrew the license from them by their consent, and since then it is
not made that I am aware of." It is, however, quite common in Paris.

ANISE.--The odorous principle is procured by distilling the
seeds of the plant _Pimpinella anisum_; the product is the oil of
aniseed of commerce. As it congeals at a temperature of about 50 deg. Fahr.,
it is frequently adulterated with a little spermaceti, to give a certain
solidity to it, whereby other cheaper essential oils can be added to it
with less chance of detection. As the oil of aniseed is quite soluble in
spirit, and the spermaceti insoluble, the fraud is easily detected.

This perfume is exceedingly strong, and is, therefore, well adapted for
mixing with soap and for scenting pomatums, but does not do nicely in
compounds for handkerchief use.

BALM, oil of Balm, called also oil of Melissa, is obtained by
distilling the leaves of the _Melissa officinalis_ with water; it comes
from the still tap with the condensed steam or water, from which it is
separated with the tap funnel. But it is very little used in perfumery,
if we except its combination in _Aqua di Argento_.

BALSAM.--Under this title there are two or three substances
used in perfumery, such as balsam of Peru, balsam of Tolu, and balsam of
storax (also called liquid amber). The first-named, is procured from the
_Myroxylon peruiferum_; it exudes from the tree when wounded, and is
also obtained by boiling down the bark and branches in water. The latter
is the most common m