It was found impossible to keep them safe at home, and, as the fever grew, these harmless maniacs invaded the sacred retreats where artists of the other sex did congregate, startling those anchorites with visions of large-eyed damsels bearing portfolios in hands delicately begrimed with crayon, chalk, and clay, gliding through the corridors hitherto haunted only by shabby paletots, shadowy hats, and cigar smoke.