nge-flower waters found in commerce. The
first is distilled from the flowers; the second is made with distilled
water and neroli; and the third is distilled from the leaves, the stems,
and the young unripe fruit of the orange tree. The first may be easily
distinguished by the addition of a few drops of sulphuric acid to some
of the water in a tube; a fine rose color is almost immediately
produced. The second also gives the same color when it is freshly
prepared; but after a certain time, two or three months at the farthest,
this color is no longer produced, and the aroma disappears completely.
The third is not discolored by the addition of the sulphuric acid; it
has scarcely any odor, and that rather an odor of the lemon plant than
of orange-flowers.--_Bulletin de la Societe Pharmaceutique d'Indre et
Loire._

* * * * *

A FORMULA FOR CONCENTRATED ELDER-FLOWER WATER.

Krembs recommends the following process for making a concentrated
elder-flower water, from which he states the ordinary water can be
extemporaneously prepared, of excellent quality, and of uniform
strength:--2 lbs. of the flowers are to be distilled with water until
that which passes into the receiver has lost nearly all perfume. This
will generally happen when from 15 to 18 pounds have passed over. To the
distillate, 2 lbs. of alcohol are to be added, and the mixture distilled
until about 5 lbs. are collected. This liquor contains all the odor of
the flowers. To make the ordinary water, 2 ounces of the concentrated
water are to be added to 10 ounces of distilled water.--_Buchner's
Report._

* * * * *

PRACTICAL REMARKS ON SPIRIT OF WINE.

BY THOMAS ARNALL.

The strength of spirit of wine is, by law, regulated by proof spirit
(sp. gr. .920) as a standard; and accordingly as it is either stronger
or weaker than the above, it is called so much per cent. above or below
proof. The term _per cent._ is used in this instance in a rather
peculiar sense. Thus, spirit of wine at 56 per cent. overproof,
signifies that 100 gallons of it are equal to 156 gallons of proof
spirit; while a spirit at 20 per cent. underproof, signifies that 100
gallons are equal to 80 gallons at proof. The rectified spirit of the
Pharmacopoeia is 56 per cent. overproof, and may be reduced to proof
by strictly adhering to the directions there given, viz., to mix five
measures with three of water. The result, however, w