The essential oils of plants are among the most popular natural remedies today. The author, with 15 years of experience in the cultivation of spices and herbs, pools his knowledge in this handbook of aromatherapy. A key feature of the work is an index of more than 200 essential oils and their properties. There is also a therapeutic index to help readers put them to practical use. In other chapters, Balz covers distillation, concentrations, chemotypes, toxicity and the possibilities and limitations of self-medication.