ASSISTED BY

FRANCIS DARWIN.




[page iv.]

[page v.]



CONTENTS.

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INTRODUCTION...Page 1-9.

CHAPTER I.

THE CIRCUMNUTATING MOVEMENTS OF SEEDLING PLANTS.

Brassica oleracea, circumnutation of the radicle, of the arched hypocotyl
whilst still buried beneath the ground, whilst rising above the ground and
straightening itself, and when erect--Circumnutation of the cotyledons--
Rate of movement--Analogous observations on various organs in species of
Githago, Gossypium, Oxalis, Tropaeolum, Citrus, Aesculus, of several
Leguminous and Cucurbitaceous genera, Opuntia, Helianthus, Primula,
Cyclamen, Stapelia, Cerinthe, Nolana, Solanum, Beta, Ricinus, Quercus,