[Panmixia], and Pangenesis, [59-60].
Parthenogenetic organisms, and natural selection, [15];
no congenital variations in, [72], [75].
Parthenogenetic ova, Weismann on, [45], [89], [91], [109].
Phylogenesis, [34].
Physiological isolation, of germ-cells, [74].
Plants, reproductive cells of, [74];
influence of pollen upon somatic tissues of (Xenia), [78-80];
bud-variation in, [90], [94-99];
Hoffmann’s investigations on the inheritance of acquired characters in, [93].