individual self-impotence in the, ii. [137];
sterility of, ii. [169];
advantage of change of soil to the, ii. [146];
relation of tubers and flowers in the, ii. [343].
Potato, sweet, sterility of the, in China, ii. [169];
varieties of the, suited to different climates, ii. [309].
Pouchet, M., his views on plurality of races, i. 2.
Pouter pigeons, i. 137-139;
furcula figured, i. 167;
history of, i. 207.