Take a piece of paper stained or painted like tortoiseshell, and cut out
a piece of the shape of a turtle’s upper shell; make claws and head, and
paste them on. Bend up the middle and put on a bottom, which you also
push up in the centre, where with a drop of shoemaker’s wax you secure a
large live fly. The efforts of the latter to escape will cause him to
carry the paper shape about the table. Except for the fright—and the
absence of mental emotions in such low animals debars much fear of
that—the creature need suffer no hurt.