Odontine, 275 or tooth-paste, 277, 278 paste, 278 Odor and taste, testing the, of volatile oils, 66, 67 Odors, compound, 240-245 Oil, castor, determination of, in volatile oil, 67, 68 fat, adulteration with, of volatile oil, 67, 68 the holy, prescribed by Moses, 21 volatile, apparatus for determining the percentage of, in a vegetable substance, 40, 41 for the distillation of, 41-46 Planchon's procedure for the recognition of a, 83-86 separation of the, and water, 46, 47 testing the odor of, 66 the taste of, 67 Oils, fat, treatment of, with benzoin, 300, 301 oxygenated, behavior of, towards nitroprusside of copper, 76-78 perfuming of, 61, 62 volatile, 33-65 ancient mode of distilling, 24 apparatus for the extraction of, 48-57 characteristics of, 33, 34 concentrated, 35 detection of adulterations of, with an oil of lower quality, 74-83 distillation of, 39-48 division of, with reference to the guaiacum reaction, 79, 80 expression of, 36-39 extraction of, 48-58 extra strong, 35 for Cologne water, durability of, 250, 251 localities best suited for the cultivation of flowers for the production of, 32, 33 modes of obtaining, 36-65 or essential, occurrence of, in plants, 31 patented, 35 principal divisions of, 34 solubility of, 33 storage of, 65 testing of, 66-86 the, used in perfumery, 87-154 Ointment makers, ancient, condition of, 24, 25 rose, according to Dioscorides, 23, 24 Ointments, directions for preparing, in ancient works, 23, 24 foreign, edict against, in Rome, 22 for the different parts of the body used by the Athenians, 22 Oleum abietes, 149 canadensis, 149, 150 amygdalæ amaræ, 87-93 anisi, 93, 94 anthemidis, 99, 100 anthos, 144, 145 cajeputi, 98, 99 carui, 100, 101 caryophylli, 108-110 cassiæ, 103, 104 cedri, 101 cinnamoni ceylonici, 102, 103 citri, 106, 107 eucalypti, 110, 111 australe, 110 florum aurantii, 126-129 fœniculi, 111, 112 gaultheriæ, 151-153 geranii, 112, 113 iridis, 129, 130 iva ranchusa, 150, 151 juniperi, 114 laurocerasi, 101, 102 lavandulæ, 115, 116 ligni rhodii, 145 sandali, 145 sassafras, 145-147 limettæ, 121, 122 limonis, 116-121 macidis, 124 menthæ crispæ, 132 piperitæ, 132-135 pulegii, 135, 136 myrthæ, 123, 134 naphæ, 126-129 neroli, 126-129 nucistæ æthereum, 124 petit grain, 129 pimenta, 136 pini, 149 pumilionis, 149 résédæ, 123 rosemarini, 144, 145 templinum, 149 unonæ, 153, 154 Olibanum in ancient times, 19-21 or frankincense, 176, 177 tincture, 230 Opiat liquide pour les dents, 280, 281 Opopanax, 176 oil, 125 tincture, 235 tincture, 230