— Bul, T098, U. S. Dept. of Agricurture. PEATE SV UT ote e 
Fic. 2.—Looking up channel of Bayou Walnut, after first rise of water, from point 300 yards 
above site of dam. Note “floatage’’ along margin. Compare with Plate IV, Figure 1, and 
Plate V, Figure 2. 
Fic. 3.—View above dam, Bayou Walnut, with bayou filled with water. Compare with Plate V, 
Figure 3. 
IMPOUNDING WATER TO CONTROL MALARIA MOSQUITOES. 
