—, —, the Uvularia perfoliata a remedy for, B. H. Coates, xxxv, 270.
—, action of, on vegetables, xii, 196; xv, 169.
Poisonous confectionary, xviii, 157.
Poisson, S. D., on the temperature of the earth, atmosphere and of space, xxxiv, 57.
—, death of, xl, 220.
Poland, a history of, published by N. Rosenfield, vi, 390.
Polanisia, i, 378.
Polar, north, fogs of, xiv, 378.
—, —, account of explorations, i, 101; xvi, 124.
Polariscope, for polarized light, xv, 369.f