98 



COGGIN BROWN: THE BURMA EARTHQUAKES OF MAY 1012. 



(3) The earth distinctly rocked. Plaster fell and glass was 



thrown to the floor. 



(4) Trees swayed, water in fire buckets moved. Pagoda tops 



broken off. General panic. 



(5) House rocked, inmates rushed out in alarm. Children 



could not stand unsupported. 

 The jerky motion of the central area was converted into more 

 Oadulose waves, which seem to have been responsible for the wide- 

 spread nausea, sickness and giddiness, which is an ever recurring 

 statement in the reports from the districts where an intensity of 

 VI VII was experienced. 



Isoseists IV and V. 



The area enclosed within this isoseist is only shown on the 



north, west and south-west of the epicentral 

 Incompleteness of area. . . ,, ,. ,. 



tract, for m the other directions it comprises 



the frontier regions of Burma with the Chinese province of Yunnan, 



and the Kingdom of Siam. These regions are very difficult of 



access, sparsely inhabited and devoid of postal communications except 



along one or two widely separated routes. Towards the north it 



embraces parts of the Myitkyina and Katlia districts, on the west 



and south-west the greater portion of the central basin of Burma 



including parts of the Pakokku, Minbu. Magwe and Thayetmyo 



districts, running down into the districts of Prome and Tharrawaddy, 



into Pegu and the Irrawaddy and Sittang deltas. 



This is the area where the shock appears to have been felt by 



the maioritv of the people, but where no 



An area of no damage. j . • 



damage was caused, except in one or two 

 cases where it is expressly stated that the structure in question 

 was old and rotten. A rolling motion of the ground was reported 

 in a few instances but not comparable with that felt in the 

 VI — VII area. Tremulous vibrations were experienced before the 

 main shock, and the whole movement though softened and modified 

 could still occasionally be differentiated into three parts. 



Although this isoseist cannot be completely drawn on the east, 



it is known that an intensity of IV V was 



Extends to far oast experienced in Kemjtung, the most easterly 



of the Southern Shan tat ; Q | t] j i; n Kmp [ ro anc l f rom Tern- 



States to Yunnan ami < o 



sjiain. yuch to the far north-east, a letter from His 



Britannic .Majesty's Consul leads me to the 



