[10] Dingler's Polyt. Journ., 180, 77.
[11] The figures for free acids refer to cubic centimeters of cold, saturated, alcoholic solutions.
[14] By "best alcohol" is understood rectified alcohol of 95 to 97 per cent.
[15] Compare patchouli oil, p. 130.
[16] For all the tinctures, 95 to 97 per cent. alcohol of the best quality is to be used.
[17] By pine-leaf oil is understood pine oil or dwarf-pine oil. See p. 149.
[18] The better quality of oil from the East Indian wood is to be used.
[19] Bulgarian rose oil is generally designated "Turkish rose oil."
[20] This spinach extract unfortunately bleaches very rapidly when exposed to light, and the extraits colored with it acquire a dirty-brown color. Hence it is recommended to use the "green tincture," which can be purchased from the larger manufactories of volatile oils.
[21] The so-called liquid orris-root oil is not pure orris-root oil, but generally a distillate of orris-root with bergamot oil; there are, however, also products in which the orris root is distilled with copaiba balsam oil and cedar oil.