Kathleen Schlesinger, 1911 Encyclopædia Britannica, Volume 25… (1911)
“ The sistrum consists of a metal frame in the shape of an egg, fastened to a handle, frequently surmounted by a grotesque head or by a figure of the sacred lioness Sekhet. The frame is crossed by four metal horizontal rods passing through holes large enough to allow them to rattle when the sistrum is shaken, the rods being prevented from slipping out altogether by little metal stops in the shape of a leaf; sometimes metal rings are threaded over the rods to increase the jingling. The sistrum is played also by beating it with a metal stick. ”
