In the dusky evening light the iris flowers showed frail and iridescent against the dark shadows under the bushes.
"The Eye of Dread"
Payne Erskine
They were large, softly- black, slow-moving, or again, in a moment, flashing with the fire that lay hidden in the dark pit of the iris.
"The Maid of Maiden Lane"
Amelia E. Barr
He could, at will, contract or dilate his pupils, having secured control over his iris by practice before a mirror, and he could use the little muscles that connect the bones within the ear, the hammer, anvil and stirrup, so as to make them produce an audible click at will.
"Makers of Modern Medicine"
James J. Walsh