50 



This earthquake was felt in Southern Japan, and its origin is given by Mr. A. IMAMURA as 9 distant 

 from Tokyo, off the south-eastern coast of Kiusiu. From the observations made in Kiusiu (see ' B.A. 

 Circular,' No. 6, p. 270), the value M - C for Tokyo and the Manila record, I should place this origin 

 further S.W. from Tokyo, and deduce 2h. 16m. as the time of origin. 



The following table gives the average arcual velocity of propagation : 



been recorded. 



The earthquake is essentially one that only exhibits one type of wave motion, and this was propagated 

 across Europe and Asia, and southwards beyond Australia. 



30. May 10. 



" Discovery," 22h. 20m. A series of thickenings commencing on May 9 at 15h. 52m. and ending 

 May 11 at 19h. 34m. 



31. May 19. 



