Exhibition brochure presents the documentation of the study of the three paintings by Chardin entitled <i>Soap Bubbles</i>. X-radiography reveals that a lost prototype had likely existed because no reworking of the subject is evident on any of these works. X-radiography also shows the changes in shape and dimensions of the supports for several of Chardin's paintings. See also <i>AATA</i> <b>29-2197</b>.