In all, thirty–four more or less distinct varieties of Peas were
obtained from several seedsmen and subjected to a two year’s trial. In
the case of one variety there were noticed, among a larger number of
plants all alike, a few forms which were markedly different. These,
however, did not vary in the following year, and agreed entirely with
another variety obtained from the same seedsman; the seeds were
therefore doubtless merely accidentally mixed. All the other varieties
yielded perfectly constant and similar offspring; at any rate, no
essential difference was observed during two trial years. For
fertilization twenty–two of these were selected and cultivated during
the whole period of the experiments. They remained constant without
any exception.