78 REPORT OF THE CALIFORNIA EARTHQUAKE COMMISSION. 
HAMBURG, GERMANY. 
Hauptstation fir Erdbebenforschung. Dr. R. Schitt, director. 
Lat. 53° 34’ N.; long. 9° 59’ E.; altitude, 16.2 meters; distance, 79.74° or 8,866 km. ; 
chord, 8, 167 km.; direction, N. 26° E. 
The instruments used were Rebeur-Paschwitz horizontal Rend drne modified by Dr. 
Hecker, two components; photographic registration. 
First PRELIMINARY |SECOND PRELIMINARY REGULAR PRINCIPAL 
TREMORS. TREMORS, WAVES, Part. 

8. ™m,. 8. . ° ™m. 
. 8. 
North component. eee 34 42 51 57 
East component . . 24 32 34 57 44 39 51 34 
Average ... 24 32 34 50 51 45 
Interval ene 2 04 22 22 OO eked 





UCCLE, BELGIUM. 
Observatoire Royale de Belgique. M. G. Lecointe, director. 
Lat. 50° 48’ N.; long. 4° 22’ E.; altitude, 100 meters; distance, 79.80° or 8,872 km. ; 
chord, 8,173 km.; direction, N. 31° E. 
Foundation, coarse Tertiary limestone. 
Seismograms, sheet No. 2 a. 
The instrument used was an Ehlert triple pendulum, photographic registration. 
(1) N. 60° E. component: 7, 11.25 seconds; V, 160; J, 5,100 meters; e, 1.003; 
r, 0.0mm.; M, 185 gm.; L, 10.08 cm. 
(2.) N. 60° W. component: 7, 10.53 seconds; V, 160; J, 4,400 meters; e, 1.004; 
r,0.0mm; M, 185 gm.; L, 10.08 cm. 
(3) North component: 7), 11.15 seconds; V, 160; J, 5,100 meters; «¢, 1.004; r, 0.0 
mm.; M, 185 gm.; ZL, 10.08 cm. 







First PRELIMINARY REGULAR 
TREMORS. WAVES. 
m $ m. 8. 
(1) N. 60° E.component . . 24 27 34 57 
(2) N.60° W.component. . 24 27 34 57 
(3) North component . . . 24 27 34 57 
Average *>3) 3. See eee 24/27 34 57 
Interval “ies. ee 11 59 22 29 

All three pendulums suffered permanent displacements during the disturbance. 
JURJEW, RUSSIA. 
Astronomical Observatory of the University. Prof. Dr. G. Lewitsky, director; Dr. A. 
Orloff, assistant. 
Lat. 58° 23’ N.; long. 26° 43’ E.; altitude, 48.5 meters; distance, 80.27° or 8,924 
km.; chord, 8,212 km.; direction, N. 16° E. 
Foundation, fine sand. 
Seismograms, sheet No. 10. 
The instruments used were Zdllner-Repsold horizontal pendulums, two components; 
photographic registration. ; 
(1) North component: 7, 31.53 seconds; V, 64.5; J, 15,000 meters; e¢, 1.004; r, 0.0 
mm.; M, 50 gm.; L, 13.3 cm. 
