The otto of orange-peel, or odoriferous principle of the orange fruit,
is procured by expression and by distillation. The peel is rasped in
order to crush the little vessels or sacs that imprison the otto.

Its abundance in the peel is shown by pinching a piece near the flame of
a candle; the otto that spirts out ignites with a brilliant
illumination.

It has many uses in perfumery, and from its refreshing fragrance finds
many admirers.

It is the leading ingredient in what is sold as "Lisbon Water" and "Eau
de Portugal." The following is a very useful form for preparing

LISBON WATER.

Rectified spirit (not less than 60 over proof), 1 gallon.
Otto of orange peel, 3 oz.
" lemon peel, 3 oz.
" rose 1/4 oz.

This is a form for

EAU DE PORTUGAL.

Rectified spirit (60 over proof), 1 gallon.
Essential oil of orange peel, 6 oz.
" lemon peel, 1 oz.
" lemon grass, 1/4 oz.
" bergamot, 1 oz.