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Book Title
Die natürliche wagerechte Richtung von Pflanzentheilen. : [Supplementary material in Charles Darwin's copy]
By
Darwin, Charles, 1809-1882

Frank, Albert Bernhard.
Year
1870
Holding Institution
Cambridge University Library
Sponsor
JISC & NEH
Copyright & Usage
Rights:
Darwin Estate and Cambridge University Library

Copyright Status:
In copyright


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Annotation Not Available
End Slip 2
overleaf
annotation We must say tht we ‹agree› take nearly th same general view as Frank does abut th manner & means by which all th parts of plants adapt themselves to th position in which thy stand & to external agencies; but with this somwht important difference tht we now know tht each grwng part is continually circumntatng , ie bendng to all sides, & if it be advantages to a part & to th plant, for it to bend in any direction with respect to th remainder of th plant, or to any external agency, ,if this agency produces any effect which can be perceived by th plnt, then th circmntatng movemt can be modified to or for such agency, or th time «no darkns may be cause, but not of direction.» of such movemt can be modified in relation to such agency as in th shape of ‹Pl› Leaves.—
End Slip 1
in dark brown ink, on grey-blue `marled' paper; dirty; left edge torn; sometime folded; taken from a sewn binding
annotation Frm final chapter
     p. 90    organs will grw￭ in￭ all directions some favourable & som hurtful.— will change into favourable—
     position — I supposes indeed, movemts.—
     Movemts become so firmy associated with «certain» external influences «such as light & gravity» tht th latter suffice to cause th sam process of grwth or movemt.
     good { like instinct — Compares with chicken seeng food & eatng it an associated habit in this case
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annotation (over)
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End Slip 2
in brown ink, on pale blue wove paper; bottom and left edges torn; sometime folded
annotation A. B. Frank￭    ￭Die Naturliche Wagerichtes Richtung von Pflanzentheilen 1870.
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annotation p. 2 speaks of sense for attraction
annotation 17 says position of all horizntal stems due to gravitation & light; but at
annotation 18 Light always preponderant over gravity
annotation 20 Fragaria stolons see to. «this» movemts vy slow.
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annotation 45 leaves stand at right angle to Light — inclined when light strike one side
annotation 46 leaves rise up in darkness — ie are apogeotropic & light causes them to be horizntal.
annotation In short an organ will put itself in any position with refernc to light which may be advntagous; ￭but￭ then th risig in th eveng is odd.
annotation 52    twistng confined to petioles.— & not t￭o joi￭nts how differt frm Pfeffer.
annotation 62, «64» leaves of tree which do not rise in darkness.
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annotation 75 Hofmster nearly discovered transverse-geotropism & Heliotropism