SECTIONAL TRANSACTIONS.— G, H. 463 



R.A.E. torsiographs, apparatus for exciting vibration in airscrew blades, 

 and a moving-film camera for attachment to airscrew hubs whereby records 

 of airscrew-blade vibration have been obtained in flight by photographing 

 the filament of a small electric light bulb secured to a blade tip by adhesive 

 compound. 



Finally, electronic aids to the measurement of vibration are reviewed and 

 some particular examples are described. 



Afternoon. 

 Excursion to Ely and Newmarket. 



Wednesday, August 24. 



Mr. C. C, Mason, O.B.E. — Engineering instruments {with demonstration) 



(lo.o). 

 Short Papers by junior engineers (ii.o). 



Mr. A. W. Skempton. — Settlement analysis of engineering structures. 



Mr. S. J. VhiMER.— Stresses in welded pipes with internal pressure and 

 end thrust. 



SECTION H.-ANTHROPOLOGY. 



A special exhibition of South Arabian antiquities, excavated by 

 Miss G. Caton Thompson in the Hadhramaut during the winter of 

 ig27-8, was on view throughout the meeting in the Fitzwilliam Museum, 

 Department of Classical Antiquities. 



Thursday, August 18. 



Rev. E. W. Smith.— ^ Congo pygmy language (lo.o). 



Discussion on Australia (10.30). 



Dr. Donald F. Thomson.— TAe Australian aborigine and the prob- 

 lems of administration. 

 The problems associated with the administration of native affairs in 

 Australia to-day are discussed briefly. This problem falls into three 

 sections : 



1. The undetribalised native, who is still in possession of his culture and 

 social organisation. 



2. The detribalised aborigine whose culture is wholly or partly broken 

 down. 



3. The half-caste. 



The discussion is concerned chiefly with the first question. The position 

 of native affairs in Australia, as well as depopulation and the principal factors 



