Abstract
It is shown that the growth behavior of potassium chloride crystals from aqueous solution is consistent with the Frank growth mechanism. The growth behavior is altered by the presence of a few parts per million of lead chloride. It is imputed that the rate of growth at unit steps is inhibited and that the rate of two‐dimensional nucleation is markedly increased by the presence of lead chloride. The effects are consistent with complete line adsorption of a complex lead containing ion at growth steps.

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