Polarity Therapy Volume 1, Book 3 Chart No. 21 - Step One in Gas Releasing Technique. Anterior and Posterior View. This chart's text has not been transcribed; the original is linked from the thumbnail. Book 3, Chart 20 ~ Book 3, Chart 22 Book 3, "Explanation of Chart No. 21" (Book 3, Page 94) Back to Book 3: Polarity Therapy