From the April 10, 1937, issue

EGGS OF BROOK TROUT HAVE BEAUTY OF PEARLS

Pearls are the gift of water; we prize their drop-round perfection of shape, their softly gleaming luster. Gift of water also are the round, lustrous, pearly globes shown on the front cover of this number of the Science News Letter. But they are living pearls; eggs of trout that will presently be broken to release the promise of pleasure to sportsmen of the summers of the 1940s.