INVESTIGATION OF THE UPPER ATMOSPHERE BY MEANS OF KITES. 83 
Apparatus. 
Comparatively little trouble has been experienced during the winter 
with any part of the apparatus. The steam engine that was bought last 
year did not prove satisfactory while in use on the ‘ Seahorse,’ but has 
been altered. The wire that was wound on the reel at Crinan is still in 
use without a join, although, of course, pieces have occasionally been lost 
from the end. The chief requirement is a satisfactory kite, which will 
‘combine the three characteristics of flying at a good angle, of being stable 
and not liable to damage in any wind, and of never exerting an excessive 
pull. Perhaps such a kite can never be obtained, but there are such an 
infinite number of ways in which the various types of kite now in use 
may be altered—and the most trifling alterations of detail are sometimes 
capable of producing very great effects—that extensive experimental work 
ean hardly fail to develop a kite better than any at present available. 
Observations are being continued at Oxshott, but it is not proposed 
to make any attempt to obtain a vessel for work elsewhere this summer. 
The Committee ask for reappointment without a grant. 
Seismological Investigations.—Tenth Report of the Committee, consist- 
ing of Professor J. W. Jupp (Chairman), Mr. J. MILNE (Secretary), 
: Lord KELvin, Professor T. G. Bonney, Mr. C. V. Boys, Professor 
G. H. Darwin, Mr. Horace Darwin, Major L. Darwin, Professor 
J. A. Ewine, Dr. R. T. GLazeproox, Mr. M. H. Gray, Professor 
C. G. Knorr, Professor R. MELpoua, Mr. R. D. OLDHAM, Professor 
J. Perry, Mr. W. E. Piummer, Professor J. H. Poyntinc, Mr. 
CuEMENT ReEip, Mr. Netson RicHarpson, and Professor H. H. 
TURNER. (Drawn up by the Secretary.) 
. [PLATE I.] 
, m CONTENTS. 
PAGE 
I. General Notes on Stations and Registers. : : : : : . 83 
Il. The Situation of Stations . : ; : / ; : : : . 84 
Il. The Origins of Large Earthquakes in 1904 . ‘ : : : 2 an OL 
IV. On International Co-operation for Seismological Work : : : ae 
V. Tabulation of the Records obtained in Tokyo of the Gray-Milne Seismograph 
for the Years 1886-1901. By R. D. OLDHAM ; : ; jee 
I. General Notes on Stations and Registers. 
Tue registers issued during the past year are Circulars Nos. 10 and 11. 
They refer to Shide, Kew, Bidston, Edinburgh, Paisley, Toronto, 
_ Vietoria (B.C.), San Fernando (Spain), Ponta Delgada (Azores), Cape of 
Good Hope, Alipore, Bombay, Kodaikanal, Batavia, Perth, Trinidad, 
Christchurch, Cairo, Cordova (Argentina), Irkutsk, Baltimore and Beirit. 
_____ Records obtained by means of horizontal pendulums (Milne type) 
_ at Irkutsk, Tiflis and Tashkent are published in the ‘Bulletin de la 
_ Commission Centrale Sismique Permanente’ of St. Petersburg, whilst 
references to similar records made in Strassburg are to be found in the 
‘Monatsbericht der Kaiserlichen Haupstation fiir Erdbebenforschung 
G2 
