CO REPORTS 0?f THE STATE 01-' SC'lEKCE. 



63 

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 Gt 



and 



Sewnologlcal Investigations. — Thirteenth Report of the Committee, con. 

 sisting of Professor H. H. Turner {Chairman), Dr. J. Milne 

 (Secretary), Dr. T. G. Bonney, Mr. C. Vernon Boys, Sir 

 George Darwin, Mr. Horace Darwin, Major L. Darwin, Professor 

 J. A. EwiNG, Dr. R. T. Glazebrook, Mr. M. H. Gray, Professor 

 J. W. JuDD, Professor C. G. Knott, Professor E. Meldola, IMr. 

 R. D. Oldham, Professor J. Perry, Mr. W. E. Plummer, Professor 

 J. H. Poynting, Mr. Clement Reid, and Mv. Nelson Richardson. 

 {Braini up hy the Secretary.) 



[Plates I.-IV.] 



Contents. 



I. Ocneral Notes on Stations and Registers. Relatiomhip to the Interna- 



tional SelsmoJogieal Association. New .Installations. Catalogue of 

 Earthqval-e Literature. Time Signals GO 



II. Sites of Stations 62 



III. On the Orientation of an Instrument n-it/i regard to the Bvtldingin nhich 



it is placed .......... 



IV. The Large Earthqwakes of 1907 



V. After-shoclis of the Jamaica Earthqualw, Janvary II, 1907 



VI. Tlw Dissipation of Earthquahc Motion as measured hg Amplitude 

 Duration .......... 



VII. On the Direction Earthquake Motion is most freely propagated . 

 Vril. xi Catalogue of Destrnctirc Earthquakes . . . . 



IX. On a Seismogram obtained in London on October 16, 1007 . 



X. Map of the World. X'y R. D. Oldham 



XL .1 Catalogvc of Chi new Earthquakes. .By Shinobu HiROT.v 



I. General Notes. 



Fou assistance in the complication of this report and earthquake registers, 

 together with general services rendered in the laboratory, my thanks are 

 due to Mr. S. Hirota, Mr. J. H. Burgess, and Mr. H. C. O'Neill. For 

 financial support, which extends to the observatory at Bidston, I have 

 to thank the Royal Society, the British Association, the administrators 

 of the Gray Fund, and Mr. Richard Cooke. The Committee ask to be 

 reappointed and for a grant of 601^. — J. Milne. 



liegisters. — During the past year the registers issued are contained 

 in Circulars Nos. 16 and 17. They refer to Shide, Kew, Bidston, Edin- 

 burgh, Faisley, Haslemere, San Fernando, Malta, Capo of Good Hope, 

 Azores, Calcutta, Bombay, Kodaikanal, Batavia, Cairo, Trinidad, Toronto 

 Victoria, B.C., Perth, Sydney, Christchurch, Lima, Irkutsk, Beirut, 

 Cordova, Baltimore, and Honolulu. 



Records have not yet been received from Melbourne and Arequipa, 

 while registers from Philadelphia, Mexico, Wellington, and ]\tauritius 

 should be brought up to date. 



The Sydney Register for August 1906, Circular 16, omits any reference 



67 

 74 

 7S 



SI 

 82 

 82 



