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.