Murray Leinster,
Operation Terror
“ It occurred to him that the squeaks sounded very much like those button-shaped hollow whistles that children put in their mouths to make strident sounds of varying pitch. Gradually, all his senses returned to normal. Even his eyes under the blindfold ceased to report [39] only glare blindness, and he saw those peculiar, dissolving grayish patterns that human eyes transmit from darkness. ”
