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Letter 1066

Hooker, J. D. to Darwin, C. R.

[c. 4 Mar 1847]
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    Summary Add

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    Notes on part of CD's species sketch.

Transcription

Pro

Natural groups having defined limits (sometimes wonderfully so) favourable to local causes effecting change in species.— Casual Appearance of one species of a limited (geographically) nat. group, in a remote quarter, (far from principal parallel—) & to which migration cannot stretch not necessarily subversive of theory—for these outlying species, though presenting the typ. charact. of such groups, often want the subtypical—& hence may not have immediately sprung from the great parent of that group— thus, the Eparid. (typical of N.H.) are seperated from Ericeæ Botanically by 1. locular anther & almost universally epipetalous stamina, but the Prionotes of Cape Horn—(its only S. Am. Repr.) has perigynous stam may such not the Prionotes be one Ericeæ of S. Am. becoming Eparid., cotemporaneously (at least independently) of the many Eric. of N.H. becoming so too: All the Pernettyas (Ericeæ) of S. Am have horned anthers—but the sole Pernettya of N.H has blunt (not horned) muticous anthers—may this be a link between Epacrid (all blunt) & Ericeæ; formed in N.H. independently of the Pernettyas formed out of Ericeæ in S. Am.

All allusions to superintending providence unnecessary— The Creator able to make first able also to go on directing & matter of moonshine to argument whether he does or no— All notice of interposition being unnecessary, is alarming to one class of readers, & uncalled for—rather expressly mention the design displayed in retaining useless organs for further modifications as proof of supervisal—

The greatest & most diffused Nat: group consequently the oldest & has survived greatest Geol. changes now Kerg. Cabbage most simple in structure of all Crucif— hence possibly crucif reached Kerg land when a large Continent helped—

    Footnotes Add

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    f1 1066.f1
    This memorandum is probably the page of notes referred to in the letter to J. D. Hooker, [14 March 1847]. It is likely that the two men did not meet in London on 4 March as they had planned (see letter to J. D. Hooker, [1 March 1847], n. 2), and that Hooker forwarded his notes on CD's essay of 1844 on or shortly after the date of the proposed meeting.
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    f2 1066.f2
    Epacridaceae, a family of shrubs mainly found in New Holland (Australia).
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    f3 1066.f3
    In addition to these notes, Hooker made annotations on the fair copy of CD's essay (DAR 113).
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