Physical characteristics, [16]
Plants, knowledge of, [57];
lore of, [59];
uses of, [59]
Planting stick, [60]
Pottery, ancient, [261];
burning, [80], [81], [82];
clays, [77];
evolution of, [78], [79];
paints, [80];
superstition regarding, [82];
tools, [78]
Prayer-sticks in springs, [256]
Preservation of tradition, [251]
Primitive commerce, [250]