. St. Nicholas [serial]. hers it moves directly through the shifting of the eyes position is ac-companied by a change in the positionof the body, which ceases to be uprightand becomes more and more side of the body from which the eyeis moving gradually becomes inferior tothe other, until by the time the changeof the eye is complete the fish swimswith its blind side underneath, and thisposition is ever after maintained. Theflounder then ceases its free-swimminghabit and sinks to the bottom. Some species of flounders are right-sided and others are left-sided. In the THE YOU
. St. Nicholas [serial]. hers it moves directly through the shifting of the eyes position is ac-companied by a change in the positionof the body, which ceases to be uprightand becomes more and more side of the body from which the eyeis moving gradually becomes inferior tothe other, until by the time the changeof the eye is complete the fish swimswith its blind side underneath, and thisposition is ever after maintained. Theflounder then ceases its free-swimminghabit and sinks to the bottom. Some species of flounders are right-sided and others are left-sided. In the THE YOUNG OF THE WINDOW-PANE FLOUNDER. ™. , , .. , t l i. ? i. u u right-sided forms, the left eye moves to 1ms is a left-sided species. In these figures the right eye has begun its pas- ° J sage across the forehead to the left side. The dark spot below the right eye in ine right side, and the left side becomesthe upper figure is the left eye seen through the transparent head. undermost. In the left-sided species the. very young flounders, which differ so muchfrom the adult ones that they can hardly berecognized as belonging to the same family astheir parents. Most boys and girls are familiarwith full-grown flounders, but very few ofthem, and few older people, know anythingabout the appearance of young flounders andthe wonderful transformations they spring and summer it is possible for youngnature students to secure specimens of newlyhatched flounders by dragging a fine-mesh neton sunny days when the water is smooth. Suchspecimens may easily be kept alive in dishesof salt water, and examined from time to timewith a low-power microscope. The flounders begin life as do ordinary they first emerge from the egg they swimvertically, with the head turned upward. Theirbodies are symmetrical, and their eyes are onopposite sides of the head. Gradually the posi-tion of the body changes from vertical to hori-zontal, and the fish remain thus for some time,swimming like or
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Keywords: ., bookauthordodgemar, bookcentury1800, bookdecade1870, bookyear1873
