. Annual report of the regents of the university on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. Figs. 5, 6,7, represent modifications observed in the pyramid, by the extension of some of the planes, and the extinction of others. Fig. 8, represents a common form at the locality. The reentrant planes indicate its compound character. When but partly developed, it presents in certain positions the appearance of a low four sided pyramid. In some instances the pyramid is modified by six additional planes which make the


. Annual report of the regents of the university on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. Figs. 5, 6,7, represent modifications observed in the pyramid, by the extension of some of the planes, and the extinction of others. Fig. 8, represents a common form at the locality. The reentrant planes indicate its compound character. When but partly developed, it presents in certain positions the appearance of a low four sided pyramid. In some instances the pyramid is modified by six additional planes which make the summit a little more obtuse, as is represented 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. Albany, Regents of the University


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Keywords: ., bookauthorne, bookcentury1800, bookdecade1850, booksubjectscience