OBSERVATORIES AND THE DATA OBTAINED. 91 
(6) Vertical component: T,, 0.95 seconds; V, 100; J, 22.5 meters; M, 45 kg.; L, 1.50 
meters. 









First SECOND REGULAR 
ere reeves |. ia 
m 8 m 8 ie 8: min. sec. 
(1) North component . . 24 33 35 03 aes 04.6 
(2) N. 60° W. component 25 28 35 34 oo ee 05.8 
(3) N. 60° E. component . 25 11 35 618 beter 05.4 
(4) North component . . 20 26 35 47 45 30 05.7 
(5) East component. . a 36 18 49 31 03.0 
(6) Vertical component . sak afte ‘eee 05.7 
FA Ta, 0 Came mmtemnrein a 25 09 35 36 
Intervals.) ape es 12 41 23 08 


Duration, Ehlert, 3 hours; Vicentini, 2 hours. The movement on the vertical compo- 
nent began at 02" 51° with reinforcement at 05" 18°. The seismograms of the Vicentini 
instrument were too faint to reproduce, but we can determine from them the movements 
of the earth. At 14” 05.7" the earth’s amplitude was: North, 1.1 mm.; east, 0.1 mm.; 
vertical, 0.9; total, 1.4 mm. At 14” 03": North, 1.03; east, 0.9; vertical, 0; total, 
1.4mm. These amplitudes should be a little larger, as the seismograms from which they 
were determined were slightly reduced. 
BUDAPEST, HUNGARY. 
Seismological Observatory of the University. Prof. Dr. R. de Kovesligethy, director. 
Lat. 47° 29.5’ N.; long. 19° 04’ W.; altitude, 110 meters; distance, 87.93° or 9,777 km. ; 
chord, 8,846 km.; direction, N. 25° E. 
Foundation, alluvium on Tertiary strata. 
The instruments used were: 
Bosch-Omori horizontal pendulum, north component: T,, 23 seconds; V,9; J, 1,190 
meters; M, 10 kg.; LZ, 75 cm. 
Vicentini-Konkoly vertical pendulum. 
North component: 7, 2.45 seconds; V, 44; J, 66 meters; M, 105 kg.; L, 1.5 meters. 
East component: 7), 2.45 seconds; V, 60; J, 90 meters; M, 105kg.; L, 1.5 meters. 
The clock controlling the time marks was not working, so that no time records were 
made; but the ‘‘ Bulletin hebdomadaire des observatoires sismiques de la Hongrie et de la 
Croatie” gives the maximum amplitudes and the corresponding periods of the waves, 
which enables us to calculate the earth-amplitudes when the instruments recorded a 
maximum. We have: 
Bosch-Omori, north component: amplitude, 22.3 mm.; period, 15 seconds; earth’s 
amplitude, 1.42 mm. 
Vicentini-Konkoly, north component: amplitude, 1.0 mm.; period, 26 seconds; 
earth’s amplitude, 2.5 mm. 
Vicentini-Konkoly, east component: amplitude, 0.55 mm.; period, 26 seconds; 
earth’s amplitude, 1.06 mm. 
O’GYALLA, HUNGARY. 
Seismological, Meteorological, and Geodynamic Observatory. Dr. N.Thege von Kon- 
koly, director. 
Lat. 47° 52’ N.; long. 18° 12’ E.; altitude, 111 meters; distance, 88.08° or 9,792 km. ; 
chord, 8,856 km.; direction, N. 25° E. 
Foundation, on a sandy plain. 
