Plaii. I\' 



Above: 



Beloi 



PRACTICAL MEASURES AGAINST INSECT PESTS 



A swamp near Lagos, Nigeria, is being iilled \vith sand and earth to destroy 



the breeding ground of mosquitoes 



A strip of land adjoining a stream has been cleared of vegetation, and 

 the debris burnt on the stumps, to destroy the breeding ground of 

 tsetse flies; near Pong-Tamale, Northern Territories of the Gold Coast 



