300 REPORTS OF RESEARCH COMMITTEES. 



7. The Absorption of Energy. 



The comparison of the maximum movement of the Aleuten and 

 Alaska earthquake shows that the maximum horizontal displace- 

 ment at both stations, Apia and at Tiflis, was nearly in the 

 azimuth of the epicentre, as it must be expected for Rayleigh wavee. 

 The displacenient in Tiflis was much larger than in Apia, in spite 

 of the very nearly equal epicentral distance. The coefficient of 

 absorpticn o'f the energy per kilometre under the Pacific Ocean is 

 0.00036, under the Asiatic continent 0.00012. 



]\ ote : Attention is drawn to the resolution of the General 

 Council regai"ding the Samoan Observatory at Apia (see page 

 \xviii). 



SECTION C. 



1. Glacial Phenomena Committee. 



The following reports are forwarded herewith : — 



A. Tasmania, by Loftus Hills, M.B.E., M.Sc, Government 



Geologist. 



B. South Ait^stralia, by Professor Walter Howchin, F.G.S. 

 C New Zealand, by Professor R. Speight. 



T. W. EDGE WORTH DAVID, 



Secretary. 



A, Notes on Observations on Glaciation in Tasmania, made 



since 1912. 



Glacial Cirques. 



A considerable number of these have been recognised and 

 described. 



In the Jukes-Darwin district seven have been described and 

 named by the writer in Bulletin 16 of Geological Survey of Tas- 

 mania, pp. 15-17. 



Five of these are situated on the eastern side of the range, and 

 two on the western. They represent various stages in the life 

 history of cirques. The South Darwin and Clark cirques are both 

 examples of an early stage in development: the East Darwin and 

 Garfield cirques have advanced a vstage further, and may be 



