ILLUSTRATIONS IN THE TEXT. 



IX 



Details of : — ■ 



Macrosiphum dahliafolii, Theo., sp. n. . . 



Myzus pier Isoldes, Theo., sp. n. . . 

 Treatment of horse-manure by spraying 

 Native latrine system for incineration of faeces 

 A portable latrine 



Portable incinerator made with galvanised iron and iron pickets 

 Earth incinerator in side view section 

 Fly cage made with wire gauze on a wooden framework 

 A fly trap with poisoned bait 



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