Chemical Culprit, Chemical Cure? Challenging Conventional Wisdom on Mental Illness Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Pg 226 Our Brain. From the book "The Human Body and Health Revised" by Alvin Davison, published in 1908 by Alvin Davison ( Sue Clark / flickr ) Produced by PRI and WNYC