But you usually can't see the dangerous part August 15, 2021 RWhitcomb-editor “Floating Island’’ (oil and mixed media on paper), by Kata Hull, in the group show of New England artists titled “Cool” at Bromfield Gallery, Boston, through Aug. 22.The gallery says:“Chilly, poised, nerveless, refreshing, brilliant. This exhibition features art work that helps everyone cool of in the heat of the summer.’’