22 



NEW YORK STATE MUSEUM 



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

 poses of calcuhiticn. 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 i)ress. 

 whereas the few preceding years were memorable for the number 

 and violence of such disturbances in various jxarts 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 nuitually 

 desirable. J)rief notes on tlie observations have also been comnumi- 

 catcd t(j the press from time to time. 



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

 pretation it may be said that the Albany station is ec|uip])ed with two 

 r)Osch-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 tlie 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 to is used. 

 There is no artificial damping. Albany is situated in latitude 

 n. 42° 3(y 6", longitude w. 'j'}^° 45' 18". The base of the instru- 

 ments lies 21 meters above sea level. 



KliCUKD OF EAR'riKJL'AKES AT AIJ.ANV S'I'ATION, OCTOUKR I, KjOy TO 



SEPTEMI'.lvK 30, igiO 

 Standard time 



DATE 



1909 

 October 20. . . 

 October 31... 

 November lo 

 December 9. . 



T9IO 



January i . . . . 

 January 22. . . 

 January 23 . . , 

 February 28 . 

 March 30. . . . 

 March 31 ... . 



May 4 



May 13 



May 20 



May 31 



June 16 



June 17 



June 20 



June 29 



July 3 



July 6 



August 4 



AuRUSt II.... 



September 2*, 



Beginning 

 preliminaries 



h. m. 



7 06 p. M. 



5 30 A. M. 



I 38 A. M. 



6 



3 

 2 



4 



12 



2 



7 



3 



7 



12 



I 



12 



3 



6 



4 



ir 



8 



II 



10 



A. M. 

 A. M. 

 P. M. 



08 



57J 



02 



l6i P. M. 



39 P. M. 



P. M. 



p. M. 



A. M. 



A. M. 



A. M. 



A. M. 



P. M. 



A. M. 



07 

 40 

 ISi 



i6i 



02 

 SO 

 14 

 49 

 38 J A.M. 



A. M. 



P. M. 



P. M. 



A. M. 



P. M. 



28 



39 

 36 i 

 38J 



Beginning 

 principal part 



4 

 I 

 2 

 7 

 3 

 7 

 12 



m. 

 45 



II 46 A.M. 



16 A.M. 

 08 A. M. 



29 P. M. 



Oli P. M. 



18 P. M. 



48 i P. M. 



34i A. M. 



24 A. M. 



16J A. M. 



6 46 A. M. 



I r ^C)\ P. M. 



8 5 I J V- M. 



T I 4S A. M. 



10 53 r. M. 



P. .M. I 

 A. M. 



Ma.ximum 



End 



h. m. 



7 41 



5 45 



I 48 



12 

 2 



12 

 3 

 6 



17 

 10 



31 

 04 

 20 

 53 

 35 



18 

 09 

 29 

 55 

 49 



P. M. 

 A. M. 

 A. M. 



A. .M. 

 A. M. 



P. M. 

 P. M. 

 P. M. 

 P. M. 

 A. M. 



A. M. 

 A. M. 

 P. M. 

 A. M. 

 A. M. 



12 ooi P. M. 



8 521 P. M. 



I t 46 A. M. 



10 54 P. M. 



5 

 8 

 12 

 4 

 I 



4 



7 



4 



12 



9 



12 



I I 



m. 

 30 

 55 

 40 



00 



4- 

 + 

 30 

 45 



00 



!+ 

 50 

 + 

 20 

 2.=; 

 30 

 40 

 45 

 40 

 21 



3') 



P. M. 

 A. M. 

 A. M. 

 A. 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. 

 P. M. 



Maximum 

 amplitude 



20 



30 



2 



i4 

 I 



i 



I 

 3 

 li 



6 



i 

 1 



4 



I 

 I 

 > 



3 



JO 



