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Thanks WW for letters. Has been visited by [ [J. B. L.] Foucault; impressed by Foucault's instruments. Notes large number of sunspots.
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The returned gloves are similar to some he has already, and he would prefer a pair with stiffer bristles.
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Thanks JSH for his magnificent present. Hopes Hooker will bring the specimens.
Have water-fowl ever been seen at Ipswich on Mr Ransome’s great tank?
Will send JS's treatise; wishes could offer something 'more intrinsically valuable' as token of gratitude for everything.
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Gives CD further details of the fertility of the offspring from cross of a yak and Indian cow, the so-called chooboos, whose fertility he has traced to the seventh generation [see Natural selection, pp. 437–8].
Thanks for photograph of the moon.
Agassiz’s superficiality and wretched reasoning powers. But he stirred up Europe on glaciers. Lyell has been working on their effects – testing work of others.
CD believes "Natural Systems" ought to be simply genealogical. "Time will come when we shall have true genealogical trees of each great kingdom of nature."