Experiments that clearly demonstrate the significant differences in solubility of different crystal faces

Abstract

Although at present there is hardly any disagreement between specialists on the issue indicated in the title, it still seems impossible to point to direct experiment that would resolve this issue beyond any doubt. Concerned with devising such an experiment, I focused on one so simple and convincing that I can consider the goal achieved. According to the concept developed in my article “Observations and Experiments on Crystallogenesis,” the solubility relative to each face of a crystalline substance is directly proportional to its lattice density, and therefore, the more complex the symbol of the observed face (with the crystal correctly oriented), the smaller it is, while for irrational faces it is even zero.

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