REPORTS ON THE STATE OF SCIENCE, 



Etc. 



SEISMOLOGICAL INVESTIGATIONS. 



Forty-first Report of Committee on Seismological Investigations (Dr. F. J. W. 

 Whipple, Chairman ; Mr. J. J. Shaw, C.B.E., Secretary ; Miss 

 E. F. Bellamy, M.A., Prof. P. G. H. Boswell, O.B.E., F.R.S., Dr. 

 A. T. J. Dollar, Prof. G. R. Goldsbrough, F.R.S., Dr. Wilfred 

 Hall, Mr. J. S. Hughes, Dr. H. Jeffreys, F.R.S., Mr. Cosmo Johns, 

 Dr. A. W. Lee, Prof. E. A. Milne, M.B.E., F.R.S., Mr. R. D. 

 Oldham, F.R.S., Prof. H. H. Plaskett, F.R.S., Prof. H. C. 

 Plummer, F.R.S., Prof. A. O. Rankine, O.B.E., F.R.S., Rev. J. P. 

 Rowland, S.J., Prof. R. A. Sampson, F.R.S., Mr. F. J. Scrase, 

 Dr. H. Shaw, Sir Frank Smith, K.C.B., C.B.E., F.R.S., Dr. R. 

 Stoneley, F.R.S., Mr. E. Tillotson, Sir G. T.' Walker, C.S. I., 

 F.R.S.). 



Forty-first Report of Committee. — The Committee met once during the year, 

 on November 29. The annual grant of £100 from the Caird Fund and the 

 special grant of £50 from the same fund were allocated to the maintenance 

 of work on the International Seismological Summary. The Committee also 

 voted the sum of £50 from the Gray-Milne Fund for the same purpose. 

 It will be necessary to make like provision for the coming year. 



A large metal sphere for use in the determination of epicentral distances 

 has been made by Messrs. C. F. Casella & Co. for the Committee. The 

 diameter of the sphere, which is cast in brass, is 18 in., the weight 68 lb. 

 After the sphere had been machined the positions of seismological observa- 

 tories were marked by holes and finally the sphere was chromium-plated. 

 The cost of engraving the positions of the stations was borne by the Uni- 

 versity Observatory, Oxford, and Mrs. H. H. Turner generously provided 

 the greater part of the accessories which are to be used for the determination 

 of epicentral distances and azimuths. 



The income of the Gray-Milne Fund is still suffering from the lapse of 

 the dividends due from the Canadian Pacific Railway. 



Gray-Milne Trust Account. 



£ «■ d. £ s . d. 



Brought forward . . 203 5 4 International Seismo- 



Trust Income . . 46 14 10 logical Summary 50 o o 



Bank Interest . .102 Operation of Seismo- 



graphs . . .10 



Milne Library . -15 



Fire Insurance . . 15 



Sphere for determina- 

 tion of epicentral 

 distances . . 45 o 



Postage, etc. . . 3 18 



Balance carried forward 139 18 5 



£ 2 Si o 4 £251 o 4 



3 4 

 o 



o 



7 



K 



