92 



cocoiN BROWN: THE BURMA EARTHQUAKES OF MAY LOil 



the world. From (lie northern and eastern portions which lie about 

 or across the frontier and are inhabited by wild tribes, I have 

 obtained no information. Moreover, had facilities existed for visiting 

 these areas or obtaining information from them, it is doubtful if 

 anything of much value would have been obtained, owing to the 

 flimsy nature of the bamboo houses in which the greater part of 

 the population exists. As it happened. I had to abandon any 

 attempt to tour through the regions in question, owing to pressure 

 of work elsewhere, but 1 am convinced that very little has been 

 lost. The curves have been drawn in accordance with what little 

 is recorded and only an equal amount, of value can be attached 

 to them. 



Isoseists VIII and IX. 

 (1) — Description and General [ntbnsity. 



The innermost, isoseismal line shown en the ma]) (PI. No. 7) encloses 



an area of approximately 36,000 square miles, 



Are* and boundaries. ^ ^ ^^ ])nr(i()U { w j H( .h the shock 



reached an intensity of Vlll on the Rossi-Forel scale. (As mentioned 

 in a previous paragraph, sufficient information does not exist to permit 

 of the delineation of the line enclosing the area over which an 

 intensity of IX was reached, but it must be a small area lying 

 mainly about the Kyaukkvan fault, and roughly coinciding with the 

 central portion of the oval enclosed by line Vlll.) 



The longei axis of this oval runs in a general north and south 

 direction, and the area includes the whole or greater part of the 

 districts of Mandalay, Sagaing, Kyaukse, Meiktila, Xamethin, Bhwebo 

 and the Ruby Mines, small portions of the districts of I'.hamo. 

 Lower Chindwin and Myingyan : practically the whole of the 

 Northern Shan States of llsipaw (with Tawngpeng and Monglong) 

 and Mongmit : parts of North and South llsenwi. Lawk Sawk, 

 Mongkung and the group of smaller States in the south-west 

 corner of Southern Shan States overlooking the Burmese plains. It 

 embraces the city of Mandalay, the towns of Maymyo, Mogok, 

 Sagaing, Shwebo, Mongmit, Lashio, Hsipaw, Cyaukse, Thazi, Meiktila, 



Yamethin and Taunggyi, mid numerous smaller places. Maymyo 

 itself probably lies just, outside the borders of the area of intensity 

 IX, all the other places experienced the lower degree of intensity, 

 namely VIII. 



