The question of the operation of Natural Selection.—Are there two principles at work?—The presence of buoyant tissue in the seed-tests and fruit-coats of inland plants, both wild and cultivated.—Useless buoyancy.—The buoyancy of seeds and fruits is not concerned with Adaptation.—Summary.
Pages [119-129]
CHAPTER XIV
THE RELATION BETWEEN LITTORAL AND INLAND PLANTS
Professor Schimper’s views.—Great antiquity of the mangrove-formation.—Problem mainly concerned with the derivation of inland from littoral plants.—Grouping of the genera possessing both coast and inland species.—Scævola.—Morinda.—Calophyllum.—Colubrina.—Tacca.—Vigna.—Premna
Pages [130-139]
CHAPTER XV
THE RELATION BETWEEN LITTORAL AND INLAND PLANTS (continued)
Inland species of a genus developed from littoral species originally brought by the currents but no longer existing in the group.—Illustrated by the Leguminous genera Erythrina, Canavalia, Mezoneuron, and Sophora, and by the Apocynaceous genus Ochrosia.—The Hawaiian difficulty.
Pages [140-154]