... MALARIA EARTHING PROTECTION DAMS LINES HOLLOW WEIRS AMBURSEN CEMENT CONTRACTORS ENGINEERS HEALTH LABOUR SWAMPS SITES LOCATION MODELS EXPERIMENTS APRONS ANTI MALARIA ANTI MALARIAL COSTS FLOODS TIN MINES MINING GATES WATER FOUNDATIONS TESTS SILT SPILLWAYS SHOOTS PLACING...

..., although the difficulties have beenovercome in the Federated Malay States, as will be described a t some length Inter. Drainage a s a n anti-malarial me:lsure is impossible in rice-fields, which must be covered with water for considerable periods. Reliablsetatisticostnhqeuestion of thdeistance needed...