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The research described in this paper on the Crystal Structure of Ice was undertaken for various reasons. In the first place data on the subject in the literature are very conflicting, as is also the case for those on the crystallography of ice. As the available structures for ice were appearing in text-books and elsewhere as representing the true facts it was deemed advisable to redetermine the structure in an effort to find why the existing models are so dissimilar and if possible to arrive at a structure on which more reliance could be placed.
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W. H. Barnes (1929) studied this question.
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