38 NEW YORK: STATE MUSfeUM 



December 3. A series of minute vibrations producing a wavy 

 line. Disturbance was of West Indian origin. 



December 22. A very characteristic record of a macroseism. 

 The east-west component was the larger with a maximum amplitude 

 of 10 millimeters as compared with 6 millimeters for the north-south 

 component. The duration of the preliminary tremors indicated a 

 source from 6000 to 10,000 miles distant. A heavy earthquake was 

 reported in Russian Turkestan in the vicinity of Lake Balkash at 

 11.20 p. m., and when clue allowance is made for time difference and 

 transmission of the waves, the relation between the record and this 

 disturbar.ce becomes apparent. 



December 23. Registered mainly on the east-west machine, 

 with an indicated distance of 4500 miles from Albany. A distinct 

 occurrence from the preceding, perhaps originating in the Cordil- 

 leran region of Mexico or South America. 



January 2. The same disturbance was recorded at Laibach, 

 Austria, a little later than at Albany. Its center was somewhere in 

 the Pacific. 



January 4. A distant shock of unknown source. 



January 14. The earthquake which destroyed Kingston and 

 had its focus in the vicinity of that city. The record of the waves 

 was scarcely proportional to the reported intensity of the shock, 

 showing only vibrations of small compass without any distinct divi- 

 sion into preliminary and main portions. The first waves to arrive 

 were apparently the main ones, as the destructive shock occurred 

 at 3.35 p. m., according to press dispatches, or 12 minutes before 

 the beginning of the record. This would indicate a velocity- of 

 about 3 kilometers per second which is the average rate of travel 

 of the larger waves. 



March 31. Faint vibrations of undoubted seismic character. 

 An earthquake was reported in Turkish Armenia on this date, but 

 the accounts are so vague that no connection can be established 

 certainly with the Albany tracing. 



April 15. Remarkable for the magnitude and duration of the 

 main tremors. The indicated intensity of the shock exceeds that of 

 any recorded before or since by the seismograph. The two com- 

 ponents have nearly the same amplitude in their principal parts, 

 though the east-west machine shows a longer absolute period of 

 disturbance, the north-south pendulum ceasing to vibrate at 2.20 a. m. 

 The pointers of both pendulums swung completely off the cylinder. 

 The earthquake seems to have been centered south of Mexico City 



