  &quot;Evaporation, flow study #7,'' by Patty Stone, at the Brookline (Mass.) Arts Center group show &quot;Unframed,'' June 15-July 20.&amp;nbsp;&amp;nbsp; &amp;nbsp; The show displays unframed art work&amp;nbsp; on paper. The gallery says that &quot;Each piece is purposely displayed directly on the gallery wall, allowing a more thorough exploration of each piece. 'Expanding and releasing the paper from its constraining structure often creates visual, as well as structural problems within the work,'&amp;nbsp;said  Elaine Sapochetti , one of the artists &amp;nbsp;in the exhibition. 'Yet, challenging these restrictions also makes the development of the art endlessly exhilarating and the completed work always a surprise. Just as in life, pushing boundaries can frequently lead to new, complicated, exciting, and inspiring revelations.&quot; ' 