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Omori, F., D. Sc: Note on the Preliminary Tremor of Earth- 

 quake Motion. (Reprinted from the Jour. Sei. Coli., Imp. 

 Univ., Tokyo, Vol. XI, PI XIII— XVI.) Tokyo, 1899; 8°. 



— Horizontal Pendulums for Registering Mechanically Earth- 

 quakes and other Earth-movements. (Reprinted from the 

 Jour. Sei. Coli., Imp. Univ., Tokyo, Vol. XI, PI. II— XII.) 

 Tokyo, 1899; 8°. 



— und Hirata, K.: Earthquake Measurement at Miyako. 

 (Reprinted from the Jour. Sei. Coli., Imp. Univ., Tokyo 

 Vol. XI, PI. XVII— XXIII.) Tokyo, 1899; 8°. 



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