To save the reader
trouble, the conclusions and most of the more important parts have been
printed in larger type than the other parts. He may, if he thinks fit, read
the last chapter first, as it includes a summary of the whole volume; and
he will thus see what points interest him, and on which he requires the
full evidence.
Finally, we must have the pleasure of returning our
[page 9]
sincere thanks to Sir Joseph Hooker and to Mr. W. Thiselton Dyer for their
great kindness, in not only sending us plants from Kew, but in procuring
others from several sources when they were required for our observations;
also, for naming many species, and giving us information on various points.
[page 10]
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,
Corylus, Pinus, Cycas, Canna, Allium, Asparagus, Phalaris, Zea, Avena,
Nephrodium, and Selaginella.
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