Dodge, Mary Mapes, 1830-1905 · New York : Scribner · leaf 152
are passed through the boards and into the ends of the blades to make them secure, and in this manner a hollow wheel is made with pockets around the outside. A square hole is cut in each end of the barrel, attach two spruce beams 8 or 10inches wide and 2 inches thick, and anchor them well with… … FIG. 14. THE WATER-WHEEL IN OPERATION. be used will determine which kind of wheel isdesirable. Then the time at the boys disposalmust be considered; for it would be folly toattempt an elaborate water-power plant if thevacation were very short. 7i6 THE PRACTICAL BOY.
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