92 REPORT—1905. 
indicated by their Shide register number on the accompanying map. 
They are distributed as follows :— 
District E (Japan—Formosa) , . ° e 2 
District F (Java to Fiji) . > ° . ‘ < eee 
District F (Himalayan Line) . . . . 4 
District M (New Zealand Fold) * : ° . 3 
Large earthquakes do not appear to have been noted in any other dis- 
tricts. From 1899 to 1902 there was marked activity in the Alaskan, 
Cordillerean and Antillean regions. This has gradually waned, whilst 
activity on the opposite side of the Pacific has not undergone any marked 
change. M is a district brought into notice by records brought home 
by the ‘ Discovery.’ These show that to the south-west of New Zealand 
there is a region where geotectonic changes are much more marked than 
has hitherto been supposed. 
IV. On Internationai Co-operation for Seismological Work. 
In the British Association Report for 1904; p. 45, a short statement 
is given of efforts which have been made to establish international 
inquiry about earthquakes. Amongst other matters, reference is made to 
a Committee appointed by the International Association of Academies. 
This Committee recommends that the Associated Academies should take 
action with their respective Governments in favour of joining the Seismic 
Association founded in Strassburg, but proposes changes in the terms of 
the Convention. One change is to the effect that a State may join the 
Association either through its Government, or through one of its scientific 
bodies. Another relates to the choice of a central station, which is left to 
the General Assembly. At present this is at Strassburg, but the 
Committee did not consider it was necessary that the locality should 
be named in the Convention, Other proposed changes were of a minor 
character. 
These resolutions have been considered by the Seismic Committee of 
the Royal Society, and His Majesty’s Government will be advised to join 
the German Convention under certain conditions. Three of these are as 
follows :—That the suggested changes be adopted ; that the United States 
of America and France are willing to co-operate ; and that seismology 
receives State aid in Britain. 
V. Tabulation of the Records obtained in Tokyo of the Gray-Milne 
Seismograph for the Years 1886-1901. By R. D. OLpHAm. 
The discussion of the records of the Gray-Milne seismograph was 
undertaken primarily with the view of detecting any possible effect of the 
variation in tidal stresses on the frequency of earthquakes, and though the 
result has been inconclusive, the figures may be useful in some other 
connection. 
The cost of the calculation was defrayed by a grant from the Research 
Fund administered by the Royal Society ; the work was conducted by 
Babu Phanindra Lal Ganguli, Research Scholar of the Caleutta Uni- 
versity, and consisted in calculating for each shock (1) the exact local 
time of occurrence ; (2) the lunar time, taking the interval between two 
successive, similar, meridian passages of the moon as representing twenty- 
