[2] GRAY, Th: On recent earthquake investigations; c.f. SCHLÜTER loc.cit p. 320.

[3] KNOTT; C.G.: Earthquakes and Earthquakes Sounds as Illustrations of the General Theory of Elastic Vibrations. Transact. of the Seismolog. Soc. of Japan. Vol XII, 1888, p. 115.

[4] MILNE, J.: Report of the Committee appointed etc. Rep. Brit. Assoc. 1881. p. 201 ff.

[5] MILNE, J.: Investigation of the Earthquake and Volcanic Phenomena of Japan. Report etc. 1895. British Assoc. for the Adv. of Science, p. 64.

[6] MILNE, J.: 12. Report of etc. Rep. Brit. Ass. 1892.

[7] MILNE, J.: A Note on the Great Earthquake of October 28th, 1891. Seismol. Journ. of Japan, Vol I (Trans. Seis. Soc. XVII) 1893, p.139.

[8] MILNE, J.: On a Seismic Survey made in Tokyo in 1884 a. 1885. Trans. Seism. Soc. X. 1887, p. 1.

[9] SEKIYA and OMORI: Comparison of Earthquake Measurement in a Pit and on the Surface Ground. Ibid. Bd. XIV 1892, p. 19.

[10] REBEUR-PASCHWITZ; E.v.: Horizontalpendelbeobachtungen etc. zu Straßburg 1892-1894. Beiträge zur Geophysik II, 1995.

[11] REBEUR-PASCHWITZ; E.v.: Europäische Beobachtungen des großen japanischen Erdbebens etd. Petermanns Mitteilungen 1895, p. 13.

[12] AGAMENNONE, G.: Sulla variazione della verlocità di propagazione dei terremoti, attribuita alle onde trasversali e longi tudinali. Atti R. Acc. dei Lincei, Rendiconti 1894. Ser. 5. III.

[13] VICENTINI, G.: Intorno ad alcuni fatti resultanti da Osservazione microsismiche. Atti e Memor. R. Acc. di sc. litt. e arti Padua, 12 genn. 1896. Vol XII.

[14] CANCANI, A.: Sulle ondulazione provenienti da centri sismici lontani. Annali d. Uff. centr. met. e. geod. italiano. Ser. II. Vol XV. Parte I. 1893.

[15] SUESS, Franz. E.: Das Erdbeben von Laibach am 14. April 1895. JB der k.k. geol. Reichsanstalt, 1896, 46 Bd., 3. Heft, p. 586-599.

[16] SUESS, F. E. loc.cit p. 598.

[17] RAYLEIGH, Proced. London Mathemat. Soc. Vol XVII. 1885-1886

[18] SUESS, F.E., op.cit. p. 596.

[19] OMORI, F.: On the Nature of the long-period Undulations of Earthquakes. Publications of the Earthquake Investigation Committee in Foreign Languages, Nr. 5, p. 42 ff, Tokyo 1901.

[20] SCHLÜTER, W.: Schwingungsart und Weg der Erdbebenwellen. 1. Teil: Neigungen, Bd. V. Heft 4, Gerlands Beiträge zur Geophysik, p. 359.

[21] MILNE, J.: Clinometric Experiments.- Experiments with a Vertical Spring Seismograph. - On the Nature of Earthquake Movement as recorded at a great Distance from its Origin. VII. Rep.

[22] ALFANI; P.G.: Bolletino sismologico dell' osservatorio Ximeniano dei p.p. delle scuole pie di Firenze. 1902. C.F. LAHERNER, A.: Zur Frage von der Natur der Erdbebenwellen. Die Erdbebenwarte. Heft 11/12.