Abstract
MR. T. V. BARKER has discussed in NATURE of May 12 the theory advanced by Fedorov and Shearer with reference to the relations between molecular and crystal symmetry. According to this hypothesis the symmetry of the crystal includes the symmetry of the molecule with such additional symmetry as is afforded by the arrangement of the molecules, if there be more than one, in the unit parallelepipedon or cell of the structure.
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EVANS, J. Molecular and Crystal Symmetry. Nature 111, 740 (1923). https://doi.org/10.1038/111740a0
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DOI: https://doi.org/10.1038/111740a0