In this quick reference guide you'll learn several of the specific properties, actions and effects of each of the twelve (12) chemical families, their archetypal pattern (typical area of use in aromatherapy) and alchemical or elemental power (primary or basic nature), along with a list of some of the most common single pure essential oils in each family. Chemistry Essential Oils Quick Reference Guide, serves as a helpful aid for selecting essential oils to use as healing tools. You can also use it for blending ideas and information on the healing properties for each chemical family. Any cautions for each chemical family are also noted.I highly recommend this to all who are interested in holistic curing and the way that aromatherapy can be applied as an effective Mind Body technique. - John L. Turner, MD