Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 459
ontains, the water sweepsin swirling currents toward one orifice of thetube and plunges suddenly down it; then, afterpassing over the gills and body of the clamand giving out nourishment, the water is ex-pelled through the other tube, and we see itrising slowly from the opening. If, however,the… … AN EGG-CASE OF THE SKATE. siphon, and the two openings in the end of it,with their fringed borders, will be seen. Nowtake a compound microscope or a magnifying-glass and watch the water above the siphon. shore. Be sureto look forthe many wormsthat may befound, eitherin burrows inthe sand or intubes…
Children's literature
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