394
INDEX.
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Normal shock and cardinal buildings, i. 38,39.
Normal wave transit, what so called, i. 35.
Nummulitic and hippurite limestone, i. 167. Objects overturned, second class of determinants, i. 124.
Oliveto, large old monastery of "Zoccollante" at, ii. 143; no second shock at, ii. 144; volcanic lakes near, ii. 144.
Ordinal building, what so called, i. 35.
Oscillation, remarks on, i. 19; of chimneystack of the Certosa near Padula, i. 380, 383.
Osservatorio, Capo di Monte (Naples), fissures, at the, 206.
Ovedone, pass over shoulder south of Monte della Vajana, so called, i. 401.
Overthrow, nature of, with resistance, i. 14, 15.
Overthrow and projection, i. 46.
Overthrown objects solid, i. 124.
Overturned bodies, formulas of, i. 124—148. Padula, site of, i. 30; perched position of, exposed to severest effects of earthquake shocks, i. 30; position of, i. 350; large fissures near, i. 351; aiguille of rock overthrown near, i. 353; transit of two shocks crossing obliquely at, i. 354; Palazzo Romani at, i. 355; II Croce Romani, i. 356; velocity that would have overthrown II Croce, i. 357; overthrown column in Palazzo Romani at, i. 359; velocity of shock deduced from the column, i. 361; overthrown vases, i. 362; corresponding velocity deduced, i. 364; arch keystones worked up, i. 366; the Certosa de JSt. Lorenzo monastery near, i. 369.
Palagonice's, Padre, testimony respecting shock at Potenza, ii. 63.
Palmieri, Professor, visited by author at Naples, i. 4; report by, on earthquake of August 14, 1851, i. 173; Signor P., erroneous conclusion of, as to change of level of land, i. 226.
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Palmieri, Palazzo, at Polla, examination of, i. 302, 303; angle of emergence and velocity determined at, i. 311.
Palmieri and Scacchi's report on Melfi earthquake of August 14, 1851, ii. 197-212.
Pausillipo, fissures in tufa at, i. 215.
Paterno church, good illustrations of class of fracture at, i. 74.
Paterno, geology of country near, ii. 28; severe injuries at, ii. 29; alleged falls of rock at, for the most part fabulous, ii. 29; sulphurous spring at, ii. 29.
Perrey, Professor, conferred with, at Dijon, i. 2.
Pertosa, church at, well-developed case of actual phenomena in the, i. 42; demolition at, i. 273; severe loss of life at, i. 273; surviving inhabitants at, i. 274; English charities at, 1. 274; direction of shock at, i. 275; emergence steep, i. 276; second shock felt at, i. 277; sound heard before the shock, i. 278; geology of the valley at, i. 282.
Petina, cause of immunity from injury, i. 262.
Petroso, II Vallone, geological evidences of violent dislocation and elevation at all sides in the mountain formation strikingly grand in, i. 250.
Phenomena presented by the effects of earthquakes resolved into problems of three classes, and all amenable to mechanical treatment, i. 22, 23; analysis of, i. 97; luminous, in the sky or air, on night of the earthquake, i. 323; possible nature of, i. 324; illustrations of, ii. 272; meteorological connection with, ii. 374.
Physical features of the country shaken, i. 161.
Picemo, church at, relations of roofing exemplified in a, i. 111; position of, ii. 50; indication of wave-path at, ii. 51.
Plains, the great, i. 164.
Pæstum, the plains from Salerno to, no visible sign of earthquake throughout, i. 235; fawn-coloured aqueous tufa found beneath, i. 235; disproof of com-
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