— granite, vii, 22.f
Pseudomorphs, siliceous, in Hampshire Co., Mass., xii, 256.
Pseudo-volcanoes of the Upper Missouri, xlv, 154.
Psora, use of chloride of lime in, xvi, 395.
Pudding stone of Mount Toby, Mass., vi, 8, 69.
Pulkova Observatory, xlvii, 88.
Pulmonary consumption, work on, S. G. Morton, noticed, xxv, 424.
Pultowa, monument of, iii, 379.
Pumice, floating, xx, 161.
— at the Azores, iv, 259.