Some observations on the crystalline lens

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                                20

dropped into dilute acetic acid solution became
opaque after a minute owing to the formation
of a white precipitate immediately under the
capsule. On opening the capsule after half
an hour's immersion, the lens was still yellow.

One of the lenses, which had been dyed
orange-red in a sodium hydrate solution with
neutral red, was dropped into dilute sulphuric
acid. It became opaque immediately, owing
to the foundation of a dense white precipitate
under the capsule. On opening the capsule,
the lens itself was found to have turned
pink.

Lenses immersed in sodium bicarbonate
solutions of 1/10 Molar, 1/20 M and 1/80 M strengths
show only very slight differences in the gain
in weight. Lenses in their capsules gained
7% of their weight in one hour and 10% in two
hours in 1/10 M sodium bicarbonate solution.
                            
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Manuscript details

Author
Clare Harris
Reference
MS/165
Series
MS
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Some observations on the crystalline lens , From The Royal Society, MS/165

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