Bui. 1098, U. S. Dept of Agriculture. 



Plate V. 



L^iM*- . -* . 





Fig. 1.— Looking up channel of Bayou Walnut, 1,500 j'ards above site of dam, before clearing. 



Fig. 2.— Looking up cliannel of Bayou Walnut during the work of clearing, from point 300 yards 



above site of dam. 



Fig. 3.— Looking up channel of Bayou Walnut from site of dam, after channel has been cleared 

 and undergrowth piled along banks. 



IMPOUNDING WATER TO CONTROL MALARIA MOSQUITOES. 



