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NEW YORK STATE MUSEUM 



records with the phases so differentiated as to be of service for pur- 

 poses of calculation. For the most part the shocks showed weak 

 movements and were of uncertain origin. In agreement with these 

 observations attention may be called to the comparatively few 

 destructive earthquakes that have been reported by the press, 

 whereas the few preceding years were memorable for the number 

 and violence of such disturbances in various parts of the world. 



An exchange of records has been maintained with other stations 

 which are so situated as to make a comparison of the data mutually 

 desirable. Brief notes on the observations have also been communi- 

 cated to the press from time to time. 



Particulars of the year's records are here given. For their inter- 

 pretation it may be said that the Albany station is equipped with two 

 Bosch-Omori horizontal pendulums, one set along the meridian and 

 the other east-west. The weight of each pendulum, including arm. is 

 ii .283 kilograms and the distance of center of gravity from rotating 

 axis is 84.6 centimeters. Their period is maintained between the 

 limits of 25 and 30 seconds. A multiplying- ratio of 10 is used. 

 There is no artificial damping. Albany is situated in latitude 

 n. 42 ° 39' 6", longitude w. 73 ° 45' 18". The base of the instru- 

 ments lies 21 meters above sea level. 



RECORD OF EARTHQUAKES AT ALBANY STATION, OCTOBER I, ICJOQ, TO 



SEPTEMBER 30, ICjIO 



Standard time 



DATE 



Beginning 

 preliminaries 



Beginning 

 principal part 



Maximum 



End 



Maximum 

 amplitude 



1909 

 October 20. . 

 October 31 . . , 

 November 10 

 December 9. 



1910 

 January 1 . . . 

 January 22. . 

 January 23 . . 

 February 28. 

 March 30. . . 

 March 31. . . 



May 4 



May 13 



May 20 



May 31 



June 16 



June 17 



June 29 



June 29 



July 3 



July 6 



August 4 



August 11... 

 September 23 



06 P. M. 

 30 A. M. 

 38 A. M. 



\JE5e- 



08 



57f 



02 

 i6| 



39 



07 

 40 

 IS2 A.M. 



A. M. 

 A. M. 

 P. M. 

 P. M. 

 P. M. 

 P. M. 

 P. M. 



i6f 



02 



SO 



14 



49 



38 \ 



28 



52 1 



39 



361 



38 J 



A. M. 

 A. M. 

 A. M. 

 P. M. 

 A. M. 

 A. M. 

 A. M. 

 P. M. 

 P. M. 

 A. M. 

 P. M. 



7 32 P. M. 

 5T45 A.M. 



1 1 46 JFA. M. 



6 16 A.M. 

 4 08 A. M. 



29 



oii 



18 

 48 \ 



341 



24 



i64 



P. M. 

 P. M. 

 P. M. 

 P. M. 

 A.M. 

 A. M. 

 A. M. 



6 46 



A. M. 



59 h P- M. 



5 I \ P. M. 



45 A.M. 



53 P. M. 



h. m. 



7 41 P. M. 



5 45 A. M. 



I 48 A. M. 



4 10 f A.M. 



P. M. 

 P. M. 

 P. M. 

 P. M. 

 A.M. 



12 18 A.M. 



2 09 A.M. 

 12 29 P. M. 



3 55 A. M. 

 6 49 A. M. 



12 OOf P. M. 



8 52! P. M. 



II 46 A.M. 



10 54 P. M. 



A. M. 

 A. M. 

 P. M. 

 P. M. 

 P. M. 



P. M. 

 A. M. 

 A. M. 

 A. M. 

 A. M. 

 P. M. 

 A.M. 

 A. M 

 A. M 



P. M. 

 P. M. 

 P. M. 



mm. 

 2 

 3 



