81 



viVi>>^\ >---mrJJj . .T^svwSSKSOBBmry.'z. ^ ' . . t « 



82 



84 



^^^Wm^m?jBmlBKBMKK'.--- ^-^m 



Figure B-2. Initial and final bed forms for experiments with the 

 0.18-millimeter sand. Experiment nijmbers shown at 

 left of each pair of profiles. --Continued 



99 



