VII.
A SUMMARY OF THE HEIGHTS AND WEIGHTS OF THE CROSSED AND SELF-FERTILISED PLANTS.
Number of species and plants measured.—Tables given.—Preliminary remarks on the offspring of plants crossed by a fresh stock.—Thirteen cases specially considered.—The effects of crossing a self-fertilised plant either by another self-fertilised plant or by an intercrossed plant of the old stock.—Summary of the results.—Preliminary remarks on the crossed and self-fertilised plants of the same stock.—The twenty-six exceptional cases considered, in which the crossed plants did not exceed greatly in height the self-fertilised.—Most of these cases shown not to be real exceptions to the rule that cross-fertilisation is beneficial.—Summary of results.—Relative weights of the crossed and self-fertilised plants.