Observations of a Naturalist in the Pacific Between 1896 and 1899, Volume 2 Plant-Dispersal
CHAPTER XIII
ADAPTATION AND SEED-BUOYANCY
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