The red notebook of Charles Darwin / edited, with an introduction and notes by Sandra Herbert.

  • Charles Darwin
Date:
1980
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Licence: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

Credit: The red notebook of Charles Darwin / edited, with an introduction and notes by Sandra Herbert. Source: Wellcome Collection.

    85/184 (page 71)
    THE RED NOTEBOOK 71 151 There must have been as much conglomerate on West of Peuquenes as on East. Where gone to. ? — There must have been some conglomerate East of Portillo Where gone to? Intermediate space protected.— Oh the vast power of the ocean ! | 152 Make a grand analogy between Wealden & Bolivia Transportal of conglomerate between two ranges mysterious !— Mem. Subsidence Uspallata of which no trace except by trees | 153 The structure of ice in columns, show that granite when weathering into balls, must exhibit orbicular structure. — When we recollect connection of columnar & orbicular in basalt. — When we see Avestruz two species, certainly different, not insensible change. —Yet one is urged to look to common parent? why should two of the most closely allied species occur in same country ? In botany instances diametrically opposite have been instanced : it is [ 154 Let it not be overlooked that except by trees, I could not see trace of Subsidence at Uspallata. — Sif crust very thick would there be undulation? would it not be mere vibration? but walls & feeling shows undulation crust thin. — Concepción earthquake | 155 Draw close Analogy Lake of Cordili; of Copiápo & Desagua¬ dero. — three ridges in Copiapo, as well as in latter. — According to M^ Brown,a person (whom I met at S.W.P.) the Cordillera extend to near Salta. & not far from TucamaQn]. & at Chuquisaca. half across the continent. — He states plains of Mendoza smooth. Sir W.P. states that in Helm's travels accounts of travelled boulders from the Cordovise range.Signor Rózales tells me at seven oclock Novem <5^^> Concepción most violently shaken by earthquake, but no serious injury. —| 156 (Analysis of Atacama. Iron in Edinburgh. Phisoph. Trans¬ actions. = Mem : Olivine. Volcanic product. = >1^''