Smithsonian Report. 1947.— Stage 



1. The ami. w, - ;...ii-i iw .\lo(.'iit>,(j, l^iiich (luiaiia. The apart iikmiI in this house, 

 sprayed with a 2.5-percent wet table DDT powder, killed mosquitoes 10 months 

 after application. 



TEW STKENCJJ^; 

 VERBODEN 

 TE ROKEN 



SMUKING PROHIBITED 



2. An example of a perfect deposit made wilii a wciUilik- DDT [jduder aiiplicd lo 

 a wall surface. Droi)lets are larji;e, coverage thorough, with no running of 

 liquid. 



