358 APPENDIX. 



Garcia, Don J. Centeno y. Abstract of a Memoir on the Earth- 

 quakes on tlie Island of Luzon in 1880. p. 43-89. 

 Ewiiig, Prof. J. A. Seismological Notes. 



— A Duplex Pendulum Seismometer. 



— The Suspension of a Horizontal Pendulum. 



— A Speed Governor for Seismograph Clocks, p. 89-95. 



Dan, T., S.B. Notes on the Earthquake at At-ami, in the Province 

 of Idzu, on September 29, 1882. p. 95-105. 



VOL. VI. 



Alexander, Prof. T. The Development of the Ptecord given by a 

 Bracket Machine. 



Milne, J. Earth Pulsations. 



Ewing, J. A. Note on a Duplex Pendulum with a Single Bob. 



Gergens, F. Note on an Iron Casting, Supposed to have been Dis- 

 turbed vv^hilst Cooling by an Earthquake. 



West, 0. D. On a Parallel Motion Seismograph. 



Ewing, J. A. Certain Methods of Astatic Suspension. 



Alexander, T. Ball and Cup Seismometer. 



K nipping, Messrs. Paul and. Keport on a System for Earthquake 

 Observation. 



Catalogues of Earthquakes. 



