Abstract
UNFORTUNATELY Mr. C. S. Jackson (p. 293) does not appear to believe that I mean what I say, nor does he definitely apprehend what I mean. It is possible, however, that he represents some other teachers, and, therefore, I must regretfully occupy your space with the elementary statements: (1) that absolute measure has nothing to do with “standard substances”; directly a standard substance is introduced the “measure” becomes relative; (2) that specific gravities are expressible in tons per cubic yard (weight or mass being understood in accordance with context and subject-matter), or in grammes per cubic inch, or even in dynes or poundals per cubic metre; and (3) that to consider a density as a mere number is erroneous.
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LODGE, O. Symbols of Applied Algebra. Nature 55, 317 (1897). https://doi.org/10.1038/055317a0
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DOI: https://doi.org/10.1038/055317a0
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