28 been previously treated with citrate, those in capsules taking up rather more than those without. Lenses taken from 10% sodium citrate solution after various periods of immersion and transferred to distilled water, took up water at the same rate independent of the time of treatment with sodium citrate, within the limits of the experiment. Ox lenses were transferred to sodium citrate solutions after standing in water for half to one hour. In 10% solution they lost weight rather more quickly than without previous standing in water; in 5% they remained steady; and in 1.25% they gained a very little, much less than lenses which had not been immersed in water. The behaviour of the lenses in different concentrations of sodium citrate suggests that the lens is impermeable to sodium citrate.
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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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