. St. Nicholas [serial] . know of the geese at the winterhome, while those living not far north or southof the latitude of New York City know the geeseonly by their thrilling, weird, and yet joyouscalls, coming faintly from the hurrying flock far * See The Heralds of Spring, page 554 of Nature andScience for April. WILD GEESE AT THEIR NORTHERN NESTING-PLACESIN THE MARSHES. and find the things to put in it. Wdl you gowith us and show us how? No nature-lover could resist such an invita-tion from a teacher, supplemented by thebright eyes and eager, smiling faces of theyoung folks in the school-ro
. St. Nicholas [serial] . know of the geese at the winterhome, while those living not far north or southof the latitude of New York City know the geeseonly by their thrilling, weird, and yet joyouscalls, coming faintly from the hurrying flock far * See The Heralds of Spring, page 554 of Nature andScience for April. WILD GEESE AT THEIR NORTHERN NESTING-PLACESIN THE MARSHES. and find the things to put in it. Wdl you gowith us and show us how? No nature-lover could resist such an invita-tion from a teacher, supplemented by thebright eyes and eager, smiling faces of theyoung folks in the school-room. The teacherhad been unpacking the aquarium and ex-plaining its purposes, and it was evident thatall were under the spell of the fascinations ofaquatic life, or, as a ten-year-old boy expressedit as soon as we were outdoors, We want tosee the live things wiggling around amongthe plants. Two miles away—it really seemed not overhalf a mile that pleasant spring day—was a 748 NATURE AND SCIENCE FOR YOUNG FOLKS. [June,. stagnant pool we skimmed a few tiny floatingplants (duckweed), that are shown on the sur-face of the water in the cut from the photo-graph of the completed aquarium. You readilysee in the second illustration how the boyscaught a supply of aquatic insects, a few tad-poles, and three or four tiny fish, by the aid ofour butterfly-net. With care such a net isstrong enough for small aquatic life, and themesh soon dries. Every dip of this net broughtup some wriggling, squirming, or swimming formof aquatic life, so that we soon had an amplesupply. Such an aquarium made in the spring can bekept for many months and new inhabitantsadded from time to time. It is not necessaryto change the water. Merely add small quan-tities to equal the loss by evaporation. Keepthe tank full. A perfectly self-sustaining aquarium—that is,one of even balance of plant and animal life—can be made with care in a tumbler or even ina very small, wide-mouthed bottle. Of coursein such small s
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