Cat's eye

Definition and stakes

Friends and Helpers

“ Have you ever looked at your cat's eyes? How well she sees in places that seem dark to us! In what way are her eyes different from ours?
At noon, the black spot in a cat's eye is only a narrow slit, but as the light grows less bright, the pupil of the eye grows rounder and larger. In this way her eyes gather in more and more light as darkness comes on, so that at twilight she can easily find her way. When it is really dark, her sensitive whiskers help her to feel what she cannot see.
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Source: Gutenberg

Portrait of Ernest Thompson Seton Ernest Thompson Seton,  Woodland Tales

“ But the wonderful thing about the Cat's-eye is that it spends most of its life underground, coming out in the early springtime for a few days of the most riotous honeymoon in some small pond, where it sings a loud chorus till mated, lays a few hundred eggs, to be hatched into tadpoles, then backs itself into its underground world by means of the boring machine on its hind feet, to be heard no more that season, and seen no more, unless some one chance to dig it out, just as Hans in the story dug out the mole-gnome. ”
Source: Gutenberg

Portrait of George Frederick Kunz George Frederick Kunz,  The Curious Lore of Precious Stones

“ Then there is the alexandrite cat’s-eye which, in addition to its chatoyant effect, changes from green to red, showing its natural color by day and glowing with a ruddy hue by artificial light. The cat’s-eye effect here is caused by a twinning of the crystal; that is, when the gem is cut, with a dome, across the twinning line, this shows itself as a smooth band of white light, with a translucent or transparent space at one side, the line varying in sharpness and in breadth as the illumination becomes more intense. ”
Source: Gutenberg

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