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Sent From (Definite): Karl PearsonSent To (Definite): Edward NettleshipDate: 27 Jul 1910
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Holder (Definite): University College London: Special Collections
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Sent from Karl Pearson
27 Jul 1910
Description:
‘...
After reading it over and reading through what we have got, it seemed best to me to make your eye chapter VII. The albinotic eye (man) and to follow it up by chapter VIII the albinotic eye (lower animals). There is so much in this which throws light on the other that I think it would be best to follow on.
There are one or two points in the sections of this chapter which are rather dogmatic (I think) as the statement that the albinotic eye of the mouse with pure white skin is always entirely without pigment. It is so in the case of the mice, one or two, examined, but is it certainly so in all white albino mice? Breeders have told me that they have occasionally met the dark purple eye in white mice & until many more have been examined including eyes of this kind, the statement is too sweeping. Further you do not know what it happening with these albino dogs, and they give courage to mention what I have not done & is not for publicity, because it stands as yet unverified, that two complete albino mice at Oxford gave rise to a litter of lilac pale slate, young with purple eyes.
With regard to the dogs here, Tong has for the present (viz[?] after being shut up for her heat and out of the sun) entirely lost one “spectacle-mark”. On the other hand Ling has been out in the open, much in the sun; his eyes have been very weak and exuding a great deal. He has never had such large spectacle marks as he has at present, and they are always wet. Another factor is that he has not been washed for four weeks (Tong has) so that, if there has been exudation, it has not been cleared away. He will not (under favourable circumstances!) pass a hen or a cow, but sheep and ducks are irresistible, which makes a walk with him a great burden.
You have given me a description of the plate of the eye sections (microscopic) but I have some of the other plates of eyes (Usher’s horses & the hare’s eyes). Could you let me have a sheet about this?
...’
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Sent to Edward Nettleship
27 Jul 1910
Description:
‘...
After reading it over and reading through what we have got, it seemed best to me to make your eye chapter VII. The albinotic eye (man) and to follow it up by chapter VIII the albinotic eye (lower animals). There is so much in this which throws light on the other that I think it would be best to follow on.
There are one or two points in the sections of this chapter which are rather dogmatic (I think) as the statement that the albinotic eye of the mouse with pure white skin is always entirely without pigment. It is so in the case of the mice, one or two, examined, but is it certainly so in all white albino mice? Breeders have told me that they have occasionally met the dark purple eye in white mice & until many more have been examined including eyes of this kind, the statement is too sweeping. Further you do not know what it happening with these albino dogs, and they give courage to mention what I have not done & is not for publicity, because it stands as yet unverified, that two complete albino mice at Oxford gave rise to a litter of lilac pale slate, young with purple eyes.
With regard to the dogs here, Tong has for the present (viz[?] after being shut up for her heat and out of the sun) entirely lost one “spectacle-mark”. On the other hand Ling has been out in the open, much in the sun; his eyes have been very weak and exuding a great deal. He has never had such large spectacle marks as he has at present, and they are always wet. Another factor is that he has not been washed for four weeks (Tong has) so that, if there has been exudation, it has not been cleared away. He will not (under favourable circumstances!) pass a hen or a cow, but sheep and ducks are irresistible, which makes a walk with him a great burden.
You have given me a description of the plate of the eye sections (microscopic) but I have some of the other plates of eyes (Usher’s horses & the hare’s eyes). Could you let me have a sheet about this?
...’