VII. Ordinary or false atavism. 185

Vicinism or variation under the influence of pollination by neighboring individuals. Vicinism in nurseries. Purifying new and old varieties. A case of running out of corn in Germany.

VIII. Latent characters. 216

Leaves of seedlings, adventitious buds, systematic latency and retrogressive evolution. Degressive evolution. Latency of specific and varietal characters in wheat-ear carnation, in the green dahlias, in white campanulas and others. Systematic latency of flower colors.

IX. Crossing of species and varieties. 247

Balanced and unbalanced, or species and variety crosses. Constant hybrids of Oenothera muricata and O. biennis. Aegilops, Medicago, brambles and other instances.

X. Mendel's law of balanced crosses. 276

Pairs of antagonistic characters, one active and one latent. Papaver somniferum. [xiv] Mephisto Danebrog. Mendel's laws. Unit- characters.

D. EVERSPORTING VARIETIES.

XI. Striped flowers. 309