Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 447
is runs up the outlet (F-F),which reaches from the chamber (E) in the rockto the surface of the ground. This outlet is inthe side of the hill seventy-five feet lower thanthe intake head (B). It is this difference in 934 NATURE AND SCIENCE FOR YOUNG FOLKS [Aug., level that causes the flow of the… … THE OUTSIDE END OF THE BLOW-OFF PIPE (j). To understand how the intake head causes thebubbles to go down, look at Fig. I, which showsthis head much enlarged. This is not exactly likethe actual head, but is simplified so as to be moreeasily understood. A number of small tubesshown at A surround the…
Children's literature
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