59 



REPORTS OF RESEARCH COMMITTEES, 



Section A. 



SOLAR PHYSICS COMMITTEE. 

 (See Vol. XIII., p. 33.) 



Owing to the absence of the Secretary in England it was announced 

 that the Report of the Committee was not ready, but that it -n^uld be 

 shortly furnished. 



It was resolved to re-appoint it, and re-vote the previous grant of 

 £50, still unexpended. 



SEISMOLOGICAL COMMITTEE. 



(See Vol. XIII., p. 46.) 



Report, consisting of five separate reports from Sydney Observatory, 

 River View College, Adelaide Observatory, Perth Observatory, and 

 Melbourne Observatory, attached hereto. 



(Sgd.) P. Baracchi, 



Secretary of Committee for Australasia. 



This Committee was re-elected. 



Sydney Observatory. 

 W. E. CooJce, Government Astronomer. 

 1911. 

 From 1st January to 3rd December, 1911 (the date on which the 

 old recording apparatus of the " MiLne " Seismograph was dismantled), 

 137 tremors were recorded, being 26 less than the number registered 

 in 1910. 



As in previous years, the greatest percentage of tremors were 

 less than 1 mm. in amplitude. Classifying them in the order of this 

 intensity, they are as follows : — 



Ko. of Tremors. 



1 

 1 

 1 

 1 

 1 

 3 

 4 

 9 

 21 

 95 



137 



