. Bulletin - New York State Museum. Science. 28 NEW YORK STATE MUSEUM Rhombohedron. The rhombohedron (fig. 106, 107, model 8) is composed of six rhombic faces, each of which intersects two basal axes at equal distances, is parallel to the third and cuts the vertical axis (c). The two rhombohedrons possible for every relative value of the vertical intercept are complementary plus (fig. 106) and minus (fig. 107); the 12 faces of the plus and minus rhombohedrons include all the faces of a hexagonal pyramid of the first order having the same relative intercepts. Some <,rhombohe- drons of calcit

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. Bulletin - New York State Museum. Science. 28 NEW YORK STATE MUSEUM Rhombohedron. The rhombohedron (fig. 106, 107, model 8) is composed of six rhombic faces, each of which intersects two basal axes at equal distances, is parallel to the third and cuts the vertical axis (c). The two rhombohedrons possible for every relative value of the vertical intercept are complementary plus (fig. 106) and minus (fig. 107); the 12 faces of the plus and minus rhombohedrons include all the faces of a hexagonal pyramid of the first order having the same relative intercepts. Some <,rhombohe- drons of calcite of varying vertical intercepts are shown in fig. Fig. 105. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State Museum; New York State Museum. Albany : New York State Education Dept

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887