C.S. Sherrington to K. Pearson, 6 Dec. 1903.- External URL
- Correspondence Details
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Sent From (Definite): Sir Charles Scott SherringtonSent To (Definite): Karl PearsonDate: 6 Dec 1903
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Holder (Definite): University College London
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Sent from
Sir Charles Scott Sherrington
6 Dec 1903
Description:
‘Dear Professor Pearson,
Let me first acknowledge your letter in reply to mine about Biology at the Roy. Soc. & thank you for considering the matter & writing so fully as you did.
It was remarkable that our letters crossed.
As to the blood-corpuscles, as different classes that can be distinguished in the tadpole are not markedly otherwise than in the frog. A difficulty in numeridcal estimation of them rises from a typical membership of each class resembling, more or less, members of other classes. These ‘uebergangs formen’ lead to the supposition, neither proven or unproven , that the various forms are phases in the life history of one (or two) Grundformen.
Numerical estimates of the different classes, given by various observers working at one & the same specimen, differ a good deal from observer to observer.
I mention these points without fully knowing your aim, & desiderata in regard to material for observation; but if groups consisting of members easily & precisely deifferentiated from members of other groups be desired for your researches I fear the blood corpuscle would probably not offer a particularly favourable field – although in some respects their diverse activities are remarkable and fascinating to follow.
With kind regards, & feeling it a privilege if I can be of any use to your distinguished labours,
believe me very truly yours,
C.S. Sherrington.’
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Sent toKarl Pearson
6 Dec 1903
Description:
‘Dear Professor Pearson,
Let me first acknowledge your letter in reply to mine about Biology at the Roy. Soc. & thank you for considering the matter & writing so fully as you did.
It was remarkable that our letters crossed.
As to the blood-corpuscles, as different classes that can be distinguished in the tadpole are not markedly otherwise than in the frog. A difficulty in numeridcal estimation of them rises from a typical membership of each class resembling, more or less, members of other classes. These ‘uebergangs formen’ lead to the supposition, neither proven or unproven , that the various forms are phases in the life history of one (or two) Grundformen.
Numerical estimates of the different classes, given by various observers working at one & the same specimen, differ a good deal from observer to observer.
I mention these points without fully knowing your aim, & desiderata in regard to material for observation; but if groups consisting of members easily & precisely deifferentiated from members of other groups be desired for your researches I fear the blood corpuscle would probably not offer a particularly favourable field – although in some respects their diverse activities are remarkable and fascinating to follow.
With kind regards, & feeling it a privilege if I can be of any use to your distinguished labours,
believe me very truly yours,
C.S. Sherrington.’
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Currently held by
University College London
Description:Special Collections. Ref. No. PEARSON/11/1/18/78
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