A. Tokyo Observation of the 

 Earthquake of Sept. 1. 192;^: 5h 22ra 49s. (G.M.T.) 



PL XVI. 



J>. Tokyo Observation of 



the Earthquake of Sept. 2, 1923: 



2h 46m 55s. (G.M.T.; 



Magnification = 2. 



P commencement of the 



pre], tremors. 

 S commencement of the 



principal portion. 



