Appendix. 



453 



Records of Milne Seismograph No. 16 — continued. 



Note. — Previous to 11th May, B.P. = 14-5 sees. 1 mm. = 0-49" static tilt. 



On 11th May, 1911, the new type of recording apparatus giving a time scale ap- 

 proximately four times as open as the old type, was installed. With this recorder the 

 time scale is 241 mm. to the hour. 



After 11th May, B.P. = 16-5 sees. 1 mm. = 0-4" static tilt, 



Principal Records of Milne Seismograph No. 20, at Wellington, New Zea- 

 land. (Latitude, 41° 17' S. ; longitude, 174° 47' E. Observer, George 

 Hogben.) 



(The instrument is placed in a special room below a house standing about 30 ft. 

 from the edge of a rocky cliff about 50 ft. high, situated about 250 yards from the 

 shore-line of Wellington Harbour.) 



