22 process. Some of these lenses were kept in the dark, others were kept in the daylight, and others were exposed to the radiations from the carbon-tungsten ore filtered through water in a uviol glass cell and concentrated by a quartz lens. No differences were observed in the short exposures tried. Some of the lenses after immersion in calcium chloride were transferred to distilled water. After an hour's immersion in distilled water, the patchy opacity had cleared, but there remained a little thread-like precipitate immediately under the capsule. Weighings showed that the lenses which had been in the stronger calcium solutions did not take up distilled water, while those from the weaker solutions gained, but at a much slower rate than lenses which had not been previously heated with calcium.
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- Clare Harris
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Some observations on the crystalline lens , From The Royal Society, MS/165
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