. Bulletin - New York State Museum. Science. Fig. 56 Fig. 51 Two other forms, the tetragonal tristetrahedron (fig. 58) and the hexakistetrahedron (fig. 59) are occasionally found in combi- nation. Some combinations in this group are shown in fig. 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