Anjou Musafir and Pascale Chazot have done an excellent job in writing this uniquely useful text. However, we please ask that readers review all of our sections, as we don't quite agree with everything that is presented. As an example, we do not believe that clay should be cleaned and reused. At times, Pascal and Anjou also write outside of their realm of experience; this practice can sometimes lead to unintentional errors.

Cano Graham has written an excellent experiential book that truly presents the miraculous properties of healing clays. This text is a must have for any clay healer book collection. Cano is singularly the most dedicated clay proponent I have ever met.

Alexander Graham Cairns-Smith presents advanced theories on clay as the origin of life. His work can be very technical but a 'clay library' is incomplete without his works.

Michel Abehsera has done an excellent job in presenting a shortened, clay-specific version of Earth Cures. However, we feel that Dextreit's original text is better, as we don't agree with some of the editing that has been done in the new manual.

We'd like to give a special thank you to Nathaniel Altman for his ground breaking work: "Healing Springs, The Ultimate Guide to Taking the Waters", which provides the only in-depth look into European Balneology available in mass print for the North American audience.

Jordan Rubin and Joseph Brasco, MD, have truly presented a remarkable book on restoring digestive health. Their "Guts and Glory" program includes the use of edible clays, and there is a small chapter dedicated to the topic.