THE PERFUME-MATERIALS FOR THE MANUFACTURE
OF PERFUMERY.
Derivation of the perfume-substances; Animal substances
used; Occurrence of volatile oils in plants 31
Families of plants richest in oil; Central Europe the actual
flower garden of the perfumer; Principal localities for the
cultivation of plants 32
Volatile oils and their properties 33
Principal divisions of volatile oils 34
Constitution of terpenes; Concentrated volatile oils 35
Modes of gaining volatile oils; Expression 36
Clarification of the oil 37
Filter for clarifying the oil, illustrated and described 38
Distillation 39
Apparatus for determining the percentage of volatile oil a
vegetable substance will yield, illustrated and described 40
Various stills for the distillation of volatile oils, illustrated
and described 41
Distillation of volatile oils by means of hot air; Separation
of the oil and water; Florentine flasks, illustrated and
described 46
Separator-funnel, illustrated and described 47
Extraction 48
Various apparatuses for extraction, illustrated and described 49
Heyl's distilling apparatus 57
Maceration or infusion; Pomades; Purification of the fats
used in the maceration process 58
_Huiles antiques_; Old French process of maceration; Piver's
maceration apparatus, illustrated and described 59
Flowers for which maceration is employed; Absorption or
_enfleurage_ 60
Apparatuses for absorption, illustrated and described 61
Flowers for which the absorption process is employed; Storage
of volatile oils 65