Ve 
REPORTS ON THE STATE OF SCIENCE 
ETC. 
Seismological Investigations.— Twenty-eighth Report of Com- 
mittee (Professor H. H. Turner, Chairman; Mr. J. J. Saw, 
Secretary; Mr. C. Vernon Boys, Dr. J. EK. Crompiz, Sir Horace 
Darwiy, Sir F. W. Dyson, Sir R. T. Guazesroox, Dr. Haroup 
JEFFREYS, Professor H. Lams, Sir J. Larmor, Dr. A. CricHtTon 
Mircueiu, Professors A. EK. H. Love, H. M. Macponatp, and 
H. C. Pruummer, Mr. W. E. Puummemr, Professor R. A. Sampson, 
Sir A. Scuuster, Sir Naprrr SHaw, and Dr. G. T. Waker). 
[Drawn up by the Chairman except where otherwise mentioned. | 
General. 
Once again the Committee has to deplore the loss of one of its eminent and 
active members in Professor C. G. Knott, who has been associated with the work 
from the time (1883) when he became a colleague of John Milne in Japan. He 
was the author of a standard work on earthquakes, ‘ The Physics of Karthquake 
Phenomena’ (Oxford University Press, 1908), which represents a series of 
carefully thought-out lectures on the science; and more recently he undertook 
a laborious investigation of the paths of earthquake rays within the earth, 
including the times to different points (Proc. #.S.L., 1919, vol. xxxix., part II., 
No. 14). This important research was the starting point for the investigation 
of depth of focus of earthquakes, mentioned in the last Report, and in this. 
The clerical work at Oxford is still being carried on in the ‘Students’ 
Observatory,’ since the tenant of the house purchased by Dr. Crombie’s bene- 
faction continued to declare himself unable to find other quarters. But the 
situation may be modified by the recent death of this tenant. His widow is 
still living in the house, and it is yet too early to say how soon it will be 
available for Seismology. 
International. 
The relation of the Committee to the Seismological Section of the International 
Union for Geodesy and Geophysics was mentioned in the last Report, and the 
suggestion was made that at the end of 1917 the Bulletins of this Committee, 
which have aimed at giving a summary of observations of the important earth- 
quakes, should become the official publication of the Union. Accordingly, as 
mentioned below, the title was altered with the year 1918 to that of ‘ The 
International ‘Seismological Summary.’ But the subsidy received from the 
Union (10,000 francs annually) is only sufficient for a fraction of the cost of 
this publication, and at the next meeting of the Union in 1924 application 
will be made for an increased grant. Meanwhile the extra expense is being met 
partly by the annual grant of 100/. from the Caird Fund of the British Associa- 
tion, and partly by a further and special grant of 200/. from the Royal Society. 
These funds (and former grants of the same kind) have been applied to the 
routine expenses of calculation and printing, and to the maintenance of the 
modest instrumental equipment (first at Shide and recently at Oxford). Super- 
vision has been provided voluntarily by the Chairman and Secretary of the 
Committee ; but during the last year a very welcome addition to the resources 
available for supervision has been made by the further generosity of Dr. 
J. E. Crombie, who has provided a salary during the year for Mr. J. S. Hughes, 
me? Br New College, Oxford, in order that he may give his whole time to 
is work. 
