276 REPORT— 1898. 



the summer months. It would be wrong to insist too strongly even on 

 these tendencies considering that only a part of one year has been 

 examined, and certainly premature to suggest any physical interpretation. 

 I hope, however, that this partial result may prove of sufficient interest to- 

 induce the Committee to sanction further inquiries of the same nature, 

 for which I think the instrument is peculiarly well fitted. Lastly, I give 

 in a tabular form (Table III.) the difference (C — O) between the mean 

 monthly result at each hour of the day, derived from the photograms, 

 and the values computed from the interpolation equation. 



XIV. Reports on Seismolor/ical Investigations published by the 

 JJritish Association. 



TAOET 



1841. Report on Instruments to record Earthquakes in Scotland and 



Ireland. Drawn up by Lord Greenock and David JIii.ne . 4G-50 



1842. Report on Registering Shocks of Earthquakes in Great IJritain. 



By David Milnk 92-98 



1843. Report on Registering Shocks of Earthquakes. Wm. Bucklaxd, 



David Milne 120-127 



1844. Report on Earthquake Shocks in Scotland. David Milne . . 8.3-90 

 1847. Report on Geological Theories of Elevation and Earthquakes. 



William Hopkins, M.A., F.R.S 33-92 



1850. First Report on the Facts of Earthquake Phenomena. Robert 



MA.LLET, C.B., F.R.S 1-81) 



1851. Second Report on the Facts of Earthquake Phenomena. Roeeut 



Mallet, C.E., F.R.S 272-320 



1852. Third Report on the Facts of Earthquake Phenomena. Robek r 



Mallet, C.E., F.R.S • l-17r> 



1854. Third Report (continued) on the Facts of Earthquake Phenomena. 



RoBEET Mallet, C.E., F.R S 1-32G 



1S54. Report on Earthquakes and Seismometers. Col. Poktlock, 



R.E., F.R.S 370-372 



1858. Fourth Report on the Facts of Earthquake Phenomena. Robebt 



Mallet, C.E.. F.R.S 1-136 



1861. Experiments at Holyhead on the Transit Velocity of AVaves 



analogous to Earthquake Waves. Robert Mallet, C.E., F.R.S. 201-23G 



Reports on the Earthquake Phenomena of Japan, drawn up by John 

 Milne, Avere issued, under varying titles, yearly from 1881 until 1895. 



In 1895 the 'Earth Tremor' Committee, appointed to investigate 

 earth tremors in Great Britain, issued the last of a series of Reports 

 dated 1893, 1894, and 1895, the Secretary being Mr. C. Davison. 



In 1896 Committees on the Earthquake Phenomena of Japan and 

 Earth Tremors were united under the joint secretaryship of C. Davison 

 and J. Milne for the purpose of carrying on seismological investigation, 

 and have issued their First, Second, and Third Reports. 



The British Association has issued since 184:1 about thirty-seven 

 Reports relating to earthquakes. 



