10 of 15% on the fifth day, of 21% on the sixth day and of 30% on the the 7 <sup>th</sup> day. On the eighth day the capsule had burst. The pH of the Ringer's solution used was 8.2. Ox lenses immersed for shorter periods in various dilutions of Ringer's solution, showed scarcely appreciable differences in their behaviour when in capsules, and without capsules, they gained 4 1/2% in one hour and 6% in two hours in all strengths used. 4 <u>The reaction of the aqueous humour.</u> Seven rabbits were killed by a blow on the head and the aqueous humour was drawn off immediately. Two observations of the pH were made in the Dale and Evans comparators. The results were 7.85 and 7.9. Observations by the indicator method of the pH of the aqueous humour withdrawn from the eyes of dogs immediately after anaesthetisation gave results of 8.0, 7.9, 8.0.
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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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