ising free caustic in soap, 66, 80

Niam fat, 34

Nigre, 56

Nigres, Utilisation of, 56

Niobe oil or ethyl benzoate, 110

Nitrobenzene, 109

O.

Oeillet, 10

Oil, Andiroba, 32

---- Arachis, 28

---- Aspic (lavender spike), 96

---- Baobab-seed, 36

---- Bay, 97

---- Bergamot, 97

---- Bitter almond, 97

---- Bleaching palm, 41

---- Bois de Rose Femelle, 99

---- Cananga, 98

---- Candle-nut, 33

---- Carapa, 32

---- Caraway, 98

---- Cassia, 98

---- Castor, 30

---- Cayenne linaloe, 99

---- Cedarwood, 98

---- Cinnamon, 98

---- Citronella, 99

---- Clove, 99

---- Cocoa-nut, 25, 26

---- Cohune-nut, 34, 35

---- Concrete orris, 100

---- Coprah, 25, 26

---- Cotton-seed, 27, 42

---- Curcas, 33

---- Eucalyptus, 100

---- Fennel, 100

---- Geranium, 101

---- Ginger-grass, 101

---- Guaiac-wood, 101

---- Hemp-seed, 29

---- Inoy-kernel, 37

---- Kananga, 98

---- Kapok, 32

---- Lemon, 102

---- Lemon-grass, 102

---- Lime, 102

---- Linaloe, 102

---- Linseed, 29

---- Maize, 28

---- Margosa, 35

---- Marjoram, 103

---- Mowrah-seed, 31

---- Neroli Bigarade, 103

---- Olive, 26

---- Olive-kernel, 27

---- Orange, 163

---- Palm, 27, 41

---- Palm-nut, 26

---- Palmarosa, 103

---- Patchouli, 103

---- Peppermint, 103, 104

---- Persimmon-seed, 36

---- Peru-balsam, 104

---- Petit-grain, 104

---- Pongam, 35

---- Refining cotton-seed, 42

---- Rose, 105

---- Rosemary, 105

---- Safflower, 33, 34

---- Sandalwood, 105, 106

---- Saponifying mineral, 58, 59

---- Sassafras, 106

---- Sesame, 28, 29

---- Star-anise, 96

---- Sunflower, 29

---- Thyme, 106

---- Verbena, 106

---- Vetivert, 106-107

---- Wheat, 36

---- Wild mango, 36

---- Wintergreen, 107

---- Ylang-ylang, 107

Oils and fats, Constitution of, 6, 7

---- ---- Examination of, 117-123

---- ---- Hydrolysis of, 13-22

---- Fish and marine animal, 30

---- Lavender, 101

---- Refractive Index of, 122

---- treatment of vegetable, 43

Oleic acid, 11

---- ---- into solid acids, Conversion of, 11, 12

Olein, 8, 9, 31

---- Cocoa-nut, 31

---- Palm-nut, 31

Oleodidaturin, 8

Oleodipalmitin, 8

Oleodistearin, 8

Oleopaimitostearin, 8

Olive-kernel oil, 27

Olive oil, 26

Open-piling soap, 71

Optical rotation, 127

Orange oil, 103

Orchidee, 107

Orris oil, concrete, 100

P