90 



EASTERN ETHIOPIA 



VII 



It has been mentioued already that the term drum is 

 usually restricted to sound-producing instruments in 

 which a tense membrane, stretched across a hollow 



=si!ag 



In Uganda drums are used instead of bells to call the congregations to 



worship. 



cylinder, is set in vibration by hand or stick. The 

 peculiar booming of a drum can be produced without 

 the aid of a stretched membrane. The Gordon College, 

 Khartoum, possesses a specimen of the remarkable 



