41 



I. EARTHQUAKES RECORDED IN THE ANTARCTIC REGIONS. 



77 50' 50" S. LAT., 1 66 44' 45" E. LONG. 



1902-1903. 



D = The distance of a station from an origin. 

 C and M give in minutes the time taken by phases C and M to travel from an origin to a given station. 



The time used in the following registers is Greenwich Mean Civil Time : Midday = 12 hours, 



Midnight = 24 or hours. 



C = Commencement. M = Maximum. D = Duration. A = Amplitude, or half of a complete swing. 



PI refers to the commencement of the first phase. 

 ?2 refers to the commencement of the second phase. 

 PS refers to the maximum motion. 



Towns printed in italics refer to instruments not of the Milne type. 



1. March 14, 1902. 



The difference in time between the " Discovery " records and M for Bidston suggests an origin to the 

 S.W. of New Zealand. 



The Bidston records probably respectively refer to P 2 and P 3 , while that for Hamburg refers to PI. 



We apparently have here the first illustration of an earthquake being only recorded at its antipodes and 

 not at intermediate stations. 



2. March 25. 



G 



