made hay.
The _Anthoxanthum odoratum_, or sweet-smelling vernal grass, to which
new hay owes its odor, probably yields identically the same fragrant
principle, and it is remarkable that both tonquin beans and vernal
grass, while actually growing, are nearly scentless, but become rapidly
aromatic when severed from the parent stock.

Chemically considered, tonquin beans are very interesting, containing,
when fresh, a fragrant volatile otto (to which their odor is
principally due), benzoic acid, a fat oil and a neutral
principal--_Coumarin_. In perfumery they are valuable, as, when ground,
they form with other bodies an excellent and permanent sachet, and by
infusion in spirit, the tincture or extract of tonquin enters into a
thousand of the compound essences; but on account of its great strength
it must be used with caution, otherwise people say your perfume is
"snuffy," owing to the predominance of the odor and its well-known use
in the boxes of those who indulge in the titillating dust.

[Illustration: Tonquin.]

EXTRACT OF TONQUIN.

Tonquin beans, 1 lb.
Rectified spirit, 1 gallon.

Digest for a month at a summer heat. Even after this maceration they are
still useful when dried and ground in those compounds known as POT
POURRI, OLLA PODRIA, &c. The extract of tonquin, like
extract of orris and extract of vanilla, is never sold pure, but is only
used in the manufacture of compound perfumes. It is the leading
ingredient in _Bouquet du Champ_--The field Bouquet--the great
resemblance of which to the odor of the hay-field, renders it a favorite
to the lovers of the pastoral.

TUBEROSE.--One of the most exquisite odors with which we are
acquainted is obtained by _enfleurage_ from the tuberose flower. It is,
as it were, a nosegay in itself, and reminds one of that delightful
perfume observed in a well-stocked flower-garden at evening close;
consequently it is much in demand by the perfumers for compounding sweet
essences.

EXTRACT OF TUBEROSE.

Eight pounds of No. 24 tuberose pomatum, cut up very fine, is to be
placed into 1 gallon of the best rectified spirit. After standing for
three weeks or a month at summer heat, and with frequent agitation, it
is fit to draw off, and being strained through cotton wool, is ready
either for sale or use in the manufacture of bouquets.

This essence of tuberose, like that of jasmine, is exceedingly volatile,
and if sold in its pure state quickly "flies off" t