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



Plate III. 



Fig. 1. — View along edge of Bayou Walnut, natural conditions, showing open water in channel 

 with grass-grown margin. 



Fig. 2. — View along channel of Bayou AValnut, natural condilions, showing clean margin on 

 opposite bank and vegetation along margin in immediate foreground. 



Fig. 3.— Looking across Bayou Walnut, 200 yards above site of dam, before clearing. 

 IMPOUNDING WATER TO CONTROL MALARIA MOSQUITOES. 



