Abstract
DESPITE the extraordinary letter of Mr. C. S. Jackson, which appears in your issue of December 31, 1896, I must say that if there is a term which teachers of rational mechanics should retain and emphasise, it is the term mass. Mass denotes the quantity of matter, or the amount of stuff, in a given body. It is a definite and invariable quantity, whether you have the body at latitude 0° or at latitude 90°; whether you conceive it transferred to the surface of Jupiter, or to the outermost ring of Saturn.
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O'REILLY, M. On Mass. Nature 55, 317 (1897). https://doi.org/10.1038/055317b0
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DOI: https://doi.org/10.1038/055317b0
