Willard Gibbs discovered a theoretical formula connecting the density, the pressure, and the absolute temperature of a mixture of gases with convertible components. He applied this formula and the estimated constants to 65 experiments of Neumann, and he discusses the systematic and accidental divergences (residuals).
A data frame with temperature, pressure, and density on 65 experiments.
Gifi, A. (1990). Nonlinear multivariate analysis. New York: Wiley. Wilson, E.B. (1926). Empiricism and rationalism. Science, 64, 47-57