— Oxahverite, xv, 387.
— pennine, xlvii, 216.
— Pickeringite, A. A. Hayes, xlvi, 360.
— picropharmacolite, vii, 368.
— platina of Russia, J. Berzelius, xviii, 162.
— polymignite, xviii, 392.
— pollen, M. Prinsep, xviii, 402.
— pyrargillite, M. Nordenskiöld, xxvi, 387.
— pyrochlore, xviii, 392.
— —, M. Wöhler, xliii, 35.