Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
vel their work. HYDROSTATICS. 81 98. Figure 6.—Tendency of liquids to seek a levelshown by aqueducts.—Let tlie p^ig. (i. dotted line represent a pipe convey-ing Avater over inequalities of theearth in the direction shown by thearrows. Whatever be the head orheight of tlie sii|)ply, and the num-ber… … 99. Figure 7.—Intermitting springs.- FiG. 7. -See Siphons (189).
Physics · Astronomy
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