Poa modesta, xlv, 45.
Poacites, fossil plants, generic characters of, vii, 182.
Poem, geological, v, 272.
Poison of the Argas persicus, xxxiii, 271.
—, Senecio obovatus poison to sheep, xv, 358.
— of the common toad, xiv, 373.
Poisons, animal, ii, 168.
—, —, antidotes for, ii, 358.
—, —, salt a remedy for, xxi, 158.
— —, ammonia an antidote against, xvi, 182.