Essence of Calamus (Extrait de Glaïeul).
| Oil of calamus | 1¾ oz. |
| Alcohol | 5 qts. |
This essence has a pleasant odor, but it is not valued as a true perfume; though if it is mixed with other essences or extracts until its characteristic odor is no longer recognizable it furnishes a very useful basis for many cheap articles.