Abstract
THE question of “Personal Equation in the Tabulation of Thermograms,” &c., which was recently considered in this journal, is but a portion of the general subject of the estimation of fractions, and the various influencing causes connected with it. Having made some experiments on this matter some time ago, and more fully of late, I subjoin some of the results, as it is a subject on which there seems but little accurately known in general, and which is important in thousands of readings made every day.
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PETRIE, W. Estimation of Fractions. Nature 13, 127–129 (1875). https://doi.org/10.1038/013127b0
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DOI: https://doi.org/10.1038/013127b0
