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*END THE SMALL PRINT! FOR PUBLIC DOMAIN ETEXTS*Ver.10/04/01*END*
This etext was prepared by Sue Asscher asschers@dingoblue.net.au
THE EFFECTS OF CROSS & SELF-FERTILISATION IN THE VEGETABLE KINGDOM.
BY
CHARLES DARWIN, M.A., F.R.S., ETC.
CONTENTS.
CHAPTER I.
INTRODUCTORY REMARKS.
Various means which favour or determine the cross-fertilisation of
plants.--Benefits derived from cross-fertilisation.--Self-fertilisation
favourable to the propagation of the species.--Brief history of the
subject.--Object of the experiments, and the manner in which they were
tried.--Statistical value of the measurements.--The experiments carried
on during several successive generations.--Nature of the relationship of
the plants in the later generations.--Uniformity of the conditions to
which the plants were subjected.--Some apparent and some real causes of
error.--Amount of pollen employed.--Arrangement of the work.--Importance
of the conclusions.
CHAPTER II.
CONVOLVULACEAE.
Ipomoea purpurea, comparison of the height and fertility of the crossed
and self-fertilised plants during ten successive generations.--Greater
constitutional vigour of the crossed plants.--The effects on the
offspring of crossing different flowers on the same plant, instead of
crossing distinct individuals.--The effects of a cross with a fresh
stock.--The descendants of the self-fertilised plant named
Hero.
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