304 REPORTS ON THE STATE OF SCIENCE, ETC. 
Notes To 1930. 
Jan. 12d. 12h. European shock with no definite determination. 
May Id. 0h. G—-454 read G—- 452. 
May Id. Local shock recorded at Tyosi, probably i 0° +142-0°. 
May 5d. 13h. See Geol. Survey of India, vol. |xv, pt. 2 
June 3d. 18h. Focal depth +0-:065. Ty, should read 18h. 9m. 20s. 
June 25d. 21h. An indeterminate shock recorded by European stations. 
Aug. 31d. See paper in Bull. Seis. Soc. Amer., vol. xxii, no. 2, p. 138. 
Oct. 7d. 23h. See Geophy. Supp. M.N.R.A.S., vol. iii, no. 3, p. 138. 
Oct. 12d. 15h. For 37-:3° N. read 39-3° N. in Summary, p. 325. 
Dec. 25d. 12h. A local European shock giving no definite determination. 
Dec. 25d. 23h. A local European shock distinct from that at 12h. 
Deep focus has also been applied to the following quakes : 
Jan. 5d. th. +0-015. Mar. 6d. 3h. +0-060. Mar. 10d. 16h. +0-090. 
Apr. 9d. 23h. +0-015. Apr. 27d. 21h. +0-020. May 18d. 0h. +0-015. May 
23d. 16h. +0-015. May 30d. 12h. +0-040. June 4d. 9h. +0-060. July 22d. 
19h. +0-:020. Aug. 4d. 5h. +0-080. Aug. 10d. 13h. +0-050. Aug. 29d. 20h. 
+0:°020. Sept. 11d. 17h. +0-025. Sept. 29d. 4h. +0-:030. Novy. 8d. 3h. 
+0:075. Dec. 13d. 14h. +0-020. Dec. 21d. 14h. +0:025. Dec. 23d., 23h. 
+0-015. 
CATALOGUE OF EARTHQUAKES, 1918-1924. 
Erratum. 
P. 53. January 5d. 4h. For +5-5° read —5-5°. 
MATHEMATICAL TABLES. 
Report of Committee on Calculation of Mathematical Tables (Prof. E. H. 
NEVILLE, Chairman; Prof. A. Lopcr, Vice-Chairman; Dr. L. J. 
Comrig, Secretary; Dr. J. R. Atrey, Dr. W. G. Bick ey, Prof. 
R. A. FisHer, Dr. J. HENDERSON, Dr. E. L. INcE, Dr. J. O. IRwin, 
Dr. J. C. P. Mitter, Mr. F. Ropsins, Mr. D. H. Sapier, Dr. A. J. 
TuHompson, Dr. J. F. TTocHer and Dr. J. WisHarrT). 
General activity —Seven meetings of the Committee have been held, 
in London. 
Dr. W. G. Bickley was co-opted in December. 
The grant of £100 was increased by the Council to £150, and has been 
expended as follows : 
Hie Visa nas 
Preparation of copy for roots of #, and F, . MT! YO" Lo 
Calculation of roots of Yy and Y,_ . . ghd COn gO 
Proof-reading of Volume “VI : a (230? OsMO 
Differencing of printed sheets of Volume VI | aot Ono 
Calculations of the functions 5 to Fao ; 36 73). (Orie 
Secretarial and miscellaneous expenses : - ate j14 1,8 
Cunningham Bequest-—The proof-reading of Volume V, containing the 
prime factors of all numbers up to 100,000, took longer than was anticipated. 
The volume has now been passed for press. 
Tables for cyclotomy and trinomial congruences, offered by Prof. L. E. 
Dickson, have been accepted for publication. 
Bessel functions—Volume VI, described in the last report, is now in press, 
and will be published shortly. 
