Zur Existenz von mikroskopisch kleinen Hohlräumen in durch Massenkristallisation gewonnenen KCl- und NaCl- Kristallen

By scanning microscopic investigation cavities starting from the centre of the cube faces were found in KCl and NaCl crystals which was confirmed by consequent light microskopic observations. The KCl crystals were obtained as well from a saturated solution stirred well all the time as by cooling and precipitating crystallization, while the NaCl crystals were produced by precipitating crystallization using organic solvents.